Re: The passing of Hugo Rietveld
Our Rietveld list obituary for Hugo Rietveld has now been published online by J.Appl.Cryst. http://journals.iucr.org/j/issues/2016/04/00/es0421/index.html Thank you for all the public and private messages of sympathy. Alan __ * Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE * +33.476.98.41.68 http://www.NeutronOptics.com/hewat __ ++ Please do NOT attach files to the whole list Send commands to eg: HELP as the subject with no body text The Rietveld_L list archive is on http://www.mail-archive.com/rietveld_l@ill.fr/ ++
Re: The passing of Hugo Rietveld
Rest in peace Hugo Rietveld! Problems connected with the Rietveld Method have occupied a significant part of my research work, authoring and co-authoring a number of papers. In three of these papers the name "Rietveld" appears explicitly in title: J. Appl. Cryst. (1992)25, 611-616; (1998)31,176-180; (2001)34, 187-195 Nicolae Popa > *The passing of Hugo Rietveld, on the 50th anniversary of Rietveld > Refinement and the 100th anniversary of Powder Diffraction* > > It is our sad duty to report the death of Hugo Rietveld at the age of 84 > after a short illness. He leaves behind his wife, a son and two daughters > to whom we extend our heartfelt sympathy on behalf of the more than one > thousand members of the Rietveld Mailing List. > > Hugo was born on the 7 March 1932 in The Hague and migrated to Western > Australia with his family, where in 1957 he enrolled at the University of > WA at the same time as Brian OâConnor and Syd Hall. He obtained his > Ph.D. > under the supervision of Ted Maslen who had studied under Dorothy Hodgkin > at Oxford. Hugo pioneered single crystal neutron diffraction at Lucas > Heights Sydney with Terry Sabine, and their first paper was published in > Nature in 1961. > > Clews C J B, Maslen E N, Rietveld H M and Sabine T M (1961) Nature 192 154 > <http://www.nature.com/nature/journal/v192/n4798/abs/192154a0.html> > âX-Ray and Neutron Diffraction Examination of p-Diphenylbenzene" > > Hugo's experience with manual data collection and refinement convinced him > of the need to computerise such tasks, and at Lucas Heights and the UWA he > programmed two of the first IBM-1620 mainframes > <http://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP1620.html> > in > Fortran-II. After obtaining his Ph.D. in 1964 with Dorothy Hodgkin as > external examiner, (she had received the Nobel Prize for her work on > penicillin and vitamin B12), he joined the neutron diffraction group of > the > Reactor Centrum Nederland in Petten and his interest turned to powder > diffraction because large single crystals were not available for the > inorganic materials of interest. > > The young group at Petten including Bert Loopstra, Bob van Laar and Hugo > Rietveld first addressed the problem of overlapping powder reflections by > using a relatively long neutron wavelength (2.6 Ã ) with a pyrolytic > graphite filter. This spread out the long d-spacing peaks, allowing more > of > them to be resolved, and is still a good solution for the magnetic > structures in which they were interested. However, for structure > refinement > many peaks were still unresolved, and the shorter d-spacings needed for > high atomic resolution could not even be seen. > > In a 1966 paper, Hugo already used intensities from overlapping Bragg > peaks. Along with others with the same problem, he then tried to fit > multiple peaks to overlapping regions, but with limited success. As well, > a > neutron powder pattern took a whole week to collect, and the local > Electrologica-X1 > computer <https://ub.fnwi.uva.nl/computermuseum//X1.php> was less powerful > than the IBM-1620 - and programmed in Algol. It was there and then that > the > brilliantly simple but profound idea arose of refining the crystal > structure together with the parameters describing the peak positions and > profiles all together, as published in the famous 1969 paper. > > Rietveld H M (1969) Journal of Applied Crystallography 22 65-71 > <http://scripts.iucr.org/cgi-bin/paper?a07067> > âA profile refinement method for nuclear and magnetic structuresâ > > Hugo distributed his Algol refinement program > <http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/46/087/46087996.pdf> > widely, but very few papers were initially published using the method. > Discouraged by the limited funding available for neutron diffraction, he > successfully applied to become head of the library department at Petten. > > One of us (AH), who had also completed his Ph.D. at Lucas Heights in 1970 > and who had moved to Harwell, encountered the same problems with neutron > diffraction for structural transitions. On the advice of George Bacon, AH > visited Hugo in 1971 and brought back Hugo's new Fortran-II version of the > profile refinement program. A Harwell version > <http://hewat.net/science/papers/1973_The_Rietveld_Program_for_the_Profile_Refinement_of_%20Neutron_Diffraction_Powder_Patterns_AERE_R7350-von_Dreele_annotations.pdf>, > modified to model the anisotropic vibrations preceding structural > transitions, was very successful, both at Harwell and with Brian Fender's > students at Oxford, in particular Tony Cheetham and Bob von Dreele. > > In 1973, when the UK
Re: The passing of Hugo Rietveld
Indeed, a sad information. A great man gone... The Rietveld method is also one of the ones I use very often. My condolences for the Family. Best regards to all the Rietveld method users. Łukasz Kruszewski > > A sad day indeed for powder diffraction. The impact of Hugo Rietveld's > work can never be overestimated. Developing and applying the Rietveld > method has been central to my work for >30 years. > > Cheers > > > > ooo0ooo > > Ian Madsen > Honorary Fellow > CSIRO Mineral Resources Flagship > Private Bag 10, Clayton South 3169 > Victoria, AUSTRALIA > Phone +61 3 9545 8785 direct > +61 3 9545 8500 switch > +61 (0) 417 554 935 mobile > FAX+61 3 9562 8919 > Email ian.mad...@csiro.au > > ooo0ooo > > From: rietveld_l-requ...@ill.fr on behalf of > Alan Hewat > Sent: Tuesday, July 19, 2016 10:57:44 PM > To: rietveld_l@ill.fr > Subject: The passing of Hugo Rietveld > > The passing of Hugo Rietveld, on the 50th anniversary of Rietveld > Refinement and the 100th anniversary of Powder Diffraction > > It is our sad duty to report the death of Hugo Rietveld at the age of 84 > after a short illness. He leaves behind his wife, a son and two daughters > to whom we extend our heartfelt sympathy on behalf of the more than one > thousand members of the Rietveld Mailing List. > > Hugo was born on the 7 March 1932 in The Hague and migrated to Western > Australia with his family, where in 1957 he enrolled at the University of > WA at the same time as Brian O’Connor and Syd Hall. He obtained his Ph.D. > under the supervision of Ted Maslen who had studied under Dorothy Hodgkin > at Oxford. Hugo pioneered single crystal neutron diffraction at Lucas > Heights Sydney with Terry Sabine, and their first paper was published in > Nature in 1961. > > Clews C J B, Maslen E N, Rietveld H M and Sabine T M (1961) Nature 192 > 154<http://www.nature.com/nature/journal/v192/n4798/abs/192154a0.html> > “X-Ray and Neutron Diffraction Examination of p-Diphenylbenzene" > > Hugo's experience with manual data collection and refinement convinced him > of the need to computerise such tasks, and at Lucas Heights and the UWA he > programmed two of the first IBM-1620 > mainframes<http://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP1620.html> > in Fortran-II. After obtaining his Ph.D. in 1964 with Dorothy Hodgkin as > external examiner, (she had received the Nobel Prize for her work on > penicillin and vitamin B12), he joined the neutron diffraction group of > the Reactor Centrum Nederland in Petten and his interest turned to powder > diffraction because large single crystals were not available for the > inorganic materials of interest. > > The young group at Petten including Bert Loopstra, Bob van Laar and Hugo > Rietveld first addressed the problem of overlapping powder reflections by > using a relatively long neutron wavelength (2.6 Å) with a pyrolytic > graphite filter. This spread out the long d-spacing peaks, allowing more > of them to be resolved, and is still a good solution for the magnetic > structures in which they were interested. However, for structure > refinement many peaks were still unresolved, and the shorter d-spacings > needed for high atomic resolution could not even be seen. > > In a 1966 paper, Hugo already used intensities from overlapping Bragg > peaks. Along with others with the same problem, he then tried to fit > multiple peaks to overlapping regions, but with limited success. As well, > a neutron powder pattern took a whole week to collect, and the local > Electrologica-X1 computer<https://ub.fnwi.uva.nl/computermuseum//X1.php> > was less powerful than the IBM-1620 - and programmed in Algol. It was > there and then that the brilliantly simple but profound idea arose of > refining the crystal structure together with the parameters describing the > peak positions and profiles all together, as published in the famous 1969 > paper. > > Rietveld H M (1969) Journal of Applied Crystallography 22 > 65-71<http://scripts.iucr.org/cgi-bin/paper?a07067> > “A profile refinement method for nuclear and magnetic structures” > > Hugo distributed his Algol refinement > program<http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/46/087/46087996.pdf> > widely, but very few papers were initially published using the method. > Discouraged by the limited funding available for neutron diffraction, he > successfully applied to become head of the library department at Petten. > >
Re: The passing of Hugo Rietveld
it is really a huge loss for the community for powder diffraction. Prof. Rietveld's work was path breaking, which altogether changed the way of looking the thing in crystallography. May the God give the strength to the family and near and dear to overcome this great loss and may the soul rest in peace.. kaushik On Wed, Jul 20, 2016 at 2:39 AM, wrote: > > A sad day indeed for powder diffraction. The impact of Hugo Rietveld's > work can never be overestimated. Developing and applying the Rietveld > method has been central to my work for >30 years. > > Cheers > > > > ooo0ooo > > Ian Madsen > Honorary Fellow > CSIRO Mineral Resources Flagship > Private Bag 10, Clayton South 3169 > Victoria, AUSTRALIA > Phone +61 3 9545 8785 direct > +61 3 9545 8500 switch > +61 (0) 417 554 935 mobile > FAX+61 3 9562 8919 > Email ian.mad...@csiro.au > > ooo0ooo > -- > *From:* rietveld_l-requ...@ill.fr on behalf > of Alan Hewat > *Sent:* Tuesday, July 19, 2016 10:57:44 PM > *To:* rietveld_l@ill.fr > *Subject:* The passing of Hugo Rietveld > > *The passing of Hugo Rietveld, on the 50th anniversary of Rietveld > Refinement and the 100th anniversary of Powder Diffraction* > > It is our sad duty to report the death of Hugo Rietveld at the age of 84 > after a short illness. He leaves behind his wife, a son and two daughters > to whom we extend our heartfelt sympathy on behalf of the more than one > thousand members of the Rietveld Mailing List. > > Hugo was born on the 7 March 1932 in The Hague and migrated to Western > Australia with his family, where in 1957 he enrolled at the University of > WA at the same time as Brian O’Connor and Syd Hall. He obtained his Ph.D. > under the supervision of Ted Maslen who had studied under Dorothy Hodgkin > at Oxford. Hugo pioneered single crystal neutron diffraction at Lucas > Heights Sydney with Terry Sabine, and their first paper was published in > Nature in 1961. > > Clews C J B, Maslen E N, Rietveld H M and Sabine T M (1961) Nature 192 154 > <http://www.nature.com/nature/journal/v192/n4798/abs/192154a0.html> > “X-Ray and Neutron Diffraction Examination of p-Diphenylbenzene" > > Hugo's experience with manual data collection and refinement convinced him > of the need to computerise such tasks, and at Lucas Heights and the UWA he > programmed two of the first IBM-1620 mainframes > <http://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP1620.html> > in > Fortran-II. After obtaining his Ph.D. in 1964 with Dorothy Hodgkin as > external examiner, (she had received the Nobel Prize for her work on > penicillin and vitamin B12), he joined the neutron diffraction group of the > Reactor Centrum Nederland in Petten and his interest turned to powder > diffraction because large single crystals were not available for the > inorganic materials of interest. > > The young group at Petten including Bert Loopstra, Bob van Laar and Hugo > Rietveld first addressed the problem of overlapping powder reflections by > using a relatively long neutron wavelength (2.6 Å) with a pyrolytic > graphite filter. This spread out the long d-spacing peaks, allowing more of > them to be resolved, and is still a good solution for the magnetic > structures in which they were interested. However, for structure refinement > many peaks were still unresolved, and the shorter d-spacings needed for > high atomic resolution could not even be seen. > > In a 1966 paper, Hugo already used intensities from overlapping Bragg > peaks. Along with others with the same problem, he then tried to fit > multiple peaks to overlapping regions, but with limited success. As well, a > neutron powder pattern took a whole week to collect, and the local > Electrologica-X1 > computer <https://ub.fnwi.uva.nl/computermuseum//X1.php> was less > powerful than the IBM-1620 - and programmed in Algol. It was there and > then that the brilliantly simple but profound idea arose of refining the > crystal structure together with the parameters describing the peak > positions and profiles all together, as published in the famous 1969 paper. > > Rietveld H M (1969) Journal of Applied Crystallography 22 65-71 > <http://scripts.iucr.org/cgi-bin/paper?a07067> > “A profile refinement method for nuclear and magnetic structures” > > Hugo distributed his Algol refinement program > <http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/46/087/46087996.pdf> > widely, but very few papers were initially published
Re: The passing of Hugo Rietveld
A sad day indeed for powder diffraction. The impact of Hugo Rietveld's work can never be overestimated. Developing and applying the Rietveld method has been central to my work for >30 years. Cheers ooo0ooo Ian Madsen Honorary Fellow CSIRO Mineral Resources Flagship Private Bag 10, Clayton South 3169 Victoria, AUSTRALIA Phone +61 3 9545 8785 direct +61 3 9545 8500 switch +61 (0) 417 554 935 mobile FAX+61 3 9562 8919 Email ian.mad...@csiro.au ooo0ooo From: rietveld_l-requ...@ill.fr on behalf of Alan Hewat Sent: Tuesday, July 19, 2016 10:57:44 PM To: rietveld_l@ill.fr Subject: The passing of Hugo Rietveld The passing of Hugo Rietveld, on the 50th anniversary of Rietveld Refinement and the 100th anniversary of Powder Diffraction It is our sad duty to report the death of Hugo Rietveld at the age of 84 after a short illness. He leaves behind his wife, a son and two daughters to whom we extend our heartfelt sympathy on behalf of the more than one thousand members of the Rietveld Mailing List. Hugo was born on the 7 March 1932 in The Hague and migrated to Western Australia with his family, where in 1957 he enrolled at the University of WA at the same time as Brian O’Connor and Syd Hall. He obtained his Ph.D. under the supervision of Ted Maslen who had studied under Dorothy Hodgkin at Oxford. Hugo pioneered single crystal neutron diffraction at Lucas Heights Sydney with Terry Sabine, and their first paper was published in Nature in 1961. Clews C J B, Maslen E N, Rietveld H M and Sabine T M (1961) Nature 192 154<http://www.nature.com/nature/journal/v192/n4798/abs/192154a0.html> “X-Ray and Neutron Diffraction Examination of p-Diphenylbenzene" Hugo's experience with manual data collection and refinement convinced him of the need to computerise such tasks, and at Lucas Heights and the UWA he programmed two of the first IBM-1620 mainframes<http://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP1620.html> in Fortran-II. After obtaining his Ph.D. in 1964 with Dorothy Hodgkin as external examiner, (she had received the Nobel Prize for her work on penicillin and vitamin B12), he joined the neutron diffraction group of the Reactor Centrum Nederland in Petten and his interest turned to powder diffraction because large single crystals were not available for the inorganic materials of interest. The young group at Petten including Bert Loopstra, Bob van Laar and Hugo Rietveld first addressed the problem of overlapping powder reflections by using a relatively long neutron wavelength (2.6 Å) with a pyrolytic graphite filter. This spread out the long d-spacing peaks, allowing more of them to be resolved, and is still a good solution for the magnetic structures in which they were interested. However, for structure refinement many peaks were still unresolved, and the shorter d-spacings needed for high atomic resolution could not even be seen. In a 1966 paper, Hugo already used intensities from overlapping Bragg peaks. Along with others with the same problem, he then tried to fit multiple peaks to overlapping regions, but with limited success. As well, a neutron powder pattern took a whole week to collect, and the local Electrologica-X1 computer<https://ub.fnwi.uva.nl/computermuseum//X1.php> was less powerful than the IBM-1620 - and programmed in Algol. It was there and then that the brilliantly simple but profound idea arose of refining the crystal structure together with the parameters describing the peak positions and profiles all together, as published in the famous 1969 paper. Rietveld H M (1969) Journal of Applied Crystallography 22 65-71<http://scripts.iucr.org/cgi-bin/paper?a07067> “A profile refinement method for nuclear and magnetic structures” Hugo distributed his Algol refinement program<http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/46/087/46087996.pdf> widely, but very few papers were initially published using the method. Discouraged by the limited funding available for neutron diffraction, he successfully applied to become head of the library department at Petten. One of us (AH), who had also completed his Ph.D. at Lucas Heights in 1970 and who had moved to Harwell, encountered the same problems with neutron diffraction for structural transitions. On the advice of George Bacon, AH visited Hugo in 1971 and brought back Hugo's new Fortran-II version of the profile refinement program. A Harwell version<http://hewat.net/science/papers/1973_The_Rietveld_Program_for_the_Profile_Refinement_of_%20Neutron_Diffraction_Powder_Patterns_AERE_R7350-von_Dreele_annotations.pdf>, modified to model the anisotropic vibrations preceding structural transitions, w
Re: The passing of Hugo Rietveld
Kindly pass on our heartfelt condolences to the family of Prof. Rietveld. May his kind soul rest in peace. He shall be remembered by all of us for his immense contribution in popularizing powder diffraction as a unique and powerful tool in material characterization. RIP Sudhindra Rayaprol On 07/19/16 06:35 PM, Alan Hewat wrote: > > > > The passing of Hugo Rietveld, on the 50th anniversary of Rietveld Refinement > and the 100th anniversary of Powder Diffraction > > > > It is our sad duty to report the death of Hugo Rietveld at the age of 84 > after a short illness. He leaves behind his wife, a son and two daughters to > whom we extend our heartfelt sympathy on behalf of the more than one thousand > members of the Rietveld Mailing List. > > Hugo was born on the 7 March 1932 in The Hague and migrated to Western > Australia with his family, where in 1957 he enrolled at the University of WA > at the same time as Brian O’Connor and Syd Hall. He obtained his Ph.D. under > the supervision of Ted Maslen who had studied under Dorothy Hodgkin at > Oxford. Hugo pioneered single crystal neutron diffraction at Lucas Heights > Sydney with Terry Sabine, and their first paper was published in Nature in > 1961. > > Clews C J B, Maslen E N, Rietveld H M and Sabine T M (1961) Nature 192 > 154(http://www.nature.com/nature/journal/v192/n4798/abs/192154a0.html) > “X-Ray and Neutron Diffraction Examination of p-Diphenylbenzene" > > > Hugo's experience with manual data collection and refinement convinced him of > the need to computerise such tasks, and at Lucas Heights and the UWA he > programmed two of the first IBM-1620 > mainframes(http://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP1620.html) > in Fortran-II. After obtaining his Ph.D. in 1964 with Dorothy Hodgkin as > external examiner, (she had received the Nobel Prize for her work on > penicillin and vitamin B12), he joined the neutron diffraction group of the > Reactor Centrum Nederland in Petten and his interest turned to powder > diffraction because large single crystals were not available for the > inorganic materials of interest. > > > > > The young group at Petten including Bert Loopstra, Bob van Laar and Hugo > Rietveld first addressed the problem of overlapping powder reflections by > using a relatively long neutron wavelength (2.6 Å) with a pyrolytic graphite > filter. This spread out the long d-spacing peaks, allowing more of them to be > resolved, and is still a good solution for the magnetic structures in which > they were interested. However, for structure refinement many peaks were still > unresolved, and the shorter d-spacings needed for high atomic resolution > could not even be seen. > > > > > In a 1966 paper, Hugo already used intensities from overlapping Bragg peaks. > Along with others with the same problem, he then tried to fit multiple peaks > to overlapping regions, but with limited success. As well, a neutron powder > pattern took a whole week to collect, and the local Electrologica-X1 > computer(https://ub.fnwi.uva.nl/computermuseum//X1.php) was less powerful > than the IBM-1620 - and programmed in Algol. It was there and then that the > brilliantly simple but profound idea arose of refining the crystal structure > together with the parameters describing the peak positions and profiles all > together, as published in the famous 1969 paper. > > > Rietveld H M (1969) Journal of Applied Crystallography 22 > 65-71(http://scripts.iucr.org/cgi-bin/paper?a07067) > > “A profile refinement method for nuclear and magnetic structures” > > > > Hugo distributed his Algol refinement > program(http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/46/087/46087996.pdf) > widely, but very few papers were initially published using the method. > Discouraged by the limited funding available for neutron diffraction, he > successfully applied to become head of the library department at Petten. > > > > One of us (AH), who had also completed his Ph.D. at Lucas Heights in 1970 and > who had moved to Harwell, encountered the same problems with neutron > diffraction for structural transitions. On the advice of George Bacon, AH > visited Hugo in 1971 and brought back Hugo's new Fortran-II version of the > profile refinement program. A Harwell > version(http://hewat.net/science/papers/1973_The_Rietveld_Program_for_the_Profile_Refinement_of_%20Neutron_Diffraction_Powder_Patterns_AERE_R7350-von_Dreele_annotations.pdf), > modified to model the anisotropic vibrations preceding structural > transitions, was very successful, both at Harwell and with Brian Fender's > students at O
RE: The passing of Hugo Rietveld
It is indeed sad news, I was fortunate enough to meet him here in WA (western Australia) a few years back, and was enthralled by his enthusiasm and eagerness to keep learning, May he rest in peace and my sincere condolences to his family. Kind regards, Karsten Winter - Original Message - From: "Reese Bill L" To:"rietveld_l@ill.fr" Cc: Sent:Tue, 19 Jul 2016 09:38:56 -0500 Subject:RE: The passing of Hugo Rietveld Very sad to hear this news. Dr. Rietveld changed the course of my career. I regret not getting the chance to meet him. WILLIAM L. (BILL) REESE X-RAY DIFFRACTION LABORATORY _Rietveld Analysis_ _Mineral Quantification_ _Clay Mineralogy_ (832)624-9030 Lab Building LB 3B 320 22777 Springwoods Village PKWY Spring, TX 77389 bill.l.re...@exxonmobil.com FROM: rietveld_l-requ...@ill.fr [mailto:rietveld_l-requ...@ill.fr] ON BEHALF OF Alan Hewat SENT: Tuesday, July 19, 2016 7:58 AM TO: rietveld_l@ill.fr SUBJECT: The passing of Hugo Rietveld THE PASSING OF HUGO RIETVELD, ON THE 50TH ANNIVERSARY OF RIETVELD REFINEMENT AND THE 100TH ANNIVERSARY OF POWDER DIFFRACTION It is our sad duty to report the death of Hugo Rietveld at the age of 84 after a short illness. He leaves behind his wife, a son and two daughters to whom we extend our heartfelt sympathy on behalf of the more than one thousand members of the Rietveld Mailing List. Hugo was born on the 7 March 1932 in The Hague and migrated to Western Australia with his family, where in 1957 he enrolled at the University of WA at the same time as Brian O’Connor and Syd Hall. He obtained his Ph.D. under the supervision of Ted Maslen who had studied under Dorothy Hodgkin at Oxford. Hugo pioneered single crystal neutron diffraction at Lucas Heights Sydney with Terry Sabine, and their first paper was published in Nature in 1961. Clews C J B, Maslen E N, Rietveld H M and Sabine T M (1961) Nature 192 154 [1] “X-Ray and Neutron Diffraction Examination of p-Diphenylbenzene" Hugo's experience with manual data collection and refinement convinced him of the need to computerise such tasks, and at Lucas Heights and the UWA he programmed two of the first IBM-1620 mainframes [2] in Fortran-II. After obtaining his Ph.D. in 1964 with Dorothy Hodgkin as external examiner, (she had received the Nobel Prize for her work on penicillin and vitamin B12), he joined the neutron diffraction group of the Reactor Centrum Nederland in Petten and his interest turned to powder diffraction because large single crystals were not available for the inorganic materials of interest. The young group at Petten including Bert Loopstra, Bob van Laar and Hugo Rietveld first addressed the problem of overlapping powder reflections by using a relatively long neutron wavelength (2.6 Å) with a pyrolytic graphite filter. This spread out the long d-spacing peaks, allowing more of them to be resolved, and is still a good solution for the magnetic structures in which they were interested. However, for structure refinement many peaks were still unresolved, and the shorter d-spacings needed for high atomic resolution could not even be seen. In a 1966 paper, Hugo already used intensities from overlapping Bragg peaks. Along with others with the same problem, he then tried to fit multiple peaks to overlapping regions, but with limited success. As well, a neutron powder pattern took a whole week to collect, and the local Electrologica-X1 computer [3] was less powerful than the IBM-1620 - and programmed in Algol. It was there and then that the brilliantly simple but profound idea arose of refining the crystal structure together with the parameters describing the peak positions and profiles all together, as published in the famous 1969 paper. Rietveld H M (1969) Journal of Applied Crystallography 22 65-71 [4] “A profile refinement method for nuclear and magnetic structures” Hugo distributed his Algol refinement program [5] widely, but very few papers were initially published using the method. Discouraged by the limited funding available for neutron diffraction, he successfully applied to become head of the library department at Petten. One of us (AH), who had also completed his Ph.D. at Lucas Heights in 1970 and who had moved to Harwell, encountered the same problems with neutron diffraction for structural transitions. On the advice of George Bacon, AH visited Hugo in 1971 and brought back Hugo's new Fortran-II version of the profile refinement program. A Harwell version [6], modified to model the anisotropic vibrations preceding structur
Re: The passing of Hugo Rietveld
> > I am deeply touched by the death of *Professor** Rietveld*. I present my > sincere condolences to his family, his friends and all those who knew > him. His contribution to field of crystallography will be remembered > for ever. > > >- > >- > >With warm regards > > Aga Shahee > > Post-Doc Fellow > > Dept. of Physics > > IITB, Mumbai, India > > Email Id: sha...@phy.iitb.ac.in > - > > Contact No: +91-9892712175 > - > > Lab. Ext.: 4567/4697 > - > > > - > > > > > On Tue, Jul 19, 2016 at 7:38 AM, Reese, Bill L < > bill.l.re...@exxonmobil.com> wrote: > >> Very sad to hear this news. Dr. Rietveld changed the course of my >> career. I regret not getting the chance to meet him. >> >> >> >> >> >> >> >> *William L. (Bill) Reese* >> >> >> >> *X-ray Diffraction Laboratory* >> >> >> >> *Rietveld Analysis* >> >> *Mineral Quantification* >> >> *Clay Mineralogy* >> >> >> >> (832)624-9030 >> >> >> >> Lab Building >> >> LB 3B 320 >> >> 22777 Springwoods Village PKWY >> >> Spring, TX 77389 >> >> >> >> *bill.l.re...@exxonmobil.com * >> >> >> >> *From:* rietveld_l-requ...@ill.fr [mailto:rietveld_l-requ...@ill.fr] *On >> Behalf Of *Alan Hewat >> *Sent:* Tuesday, July 19, 2016 7:58 AM >> *To:* rietveld_l@ill.fr >> *Subject:* The passing of Hugo Rietveld >> >> >> >> *The passing of Hugo Rietveld, on the 50th anniversary of Rietveld >> Refinement and the 100th anniversary of Powder Diffraction* >> >> >> >> It is our sad duty to report the death of Hugo Rietveld at the age of 84 >> after a short illness. He leaves behind his wife, a son and two daughters >> to whom we extend our heartfelt sympathy on behalf of the more than one >> thousand members of the Rietveld Mailing List. >> >> >> >> Hugo was born on the 7 March 1932 in The Hague and migrated to Western >> Australia with his family, where in 1957 he enrolled at the University of >> WA at the same time as Brian O’Connor and Syd Hall. He obtained his Ph.D. >> under the supervision of Ted Maslen who had studied under Dorothy Hodgkin >> at Oxford. Hugo pioneered single crystal neutron diffraction at Lucas >> Heights Sydney with Terry Sabine, and their first paper was published in >> Nature in 1961. >> >> >> >> Clews C J B, Maslen E N, Rietveld H M and Sabine T M (1961) Nature 192 154 >> <http://www.nature.com/nature/journal/v192/n4798/abs/192154a0.html> >> >> “X-Ray and Neutron Diffraction Examination of p-Diphenylbenzene" >> >> >> >> Hugo's experience with manual data collection and refinement convinced >> him of the need to computerise such tasks, and at Lucas Heights and the UWA >> he programmed two of the first IBM-1620 mainframes >> <http://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP1620.html> >> in >> Fortran-II. After obtaining his Ph.D. in 1964 with Dorothy Hodgkin as >> external examiner, (she had received the Nobel Prize for her work on >> penicillin and vitamin B12), he joined the neutron diffraction group of the >> Reactor Centrum Nederland in Petten and his interest turned to powder >> diffraction because large single crystals were not available for the >> inorganic materials of interest. >> >> >> >> The young group at Petten including Bert Loopstra, Bob van Laar and Hugo >> Rietveld first addressed the problem of overlapping powder reflections by >> using a relatively long neutron wavelength (2.6 Å) with a pyrolytic >> graphite filter. This spread out the long d-spacing peaks, allowing more of >> them to be resolved, and is still a good solution for the magnetic >> structures in which they were interested. However, for structure refinement >> many peaks were still unresolved, and the shorter d-spacings needed for >> high atomic resolution could not even be seen. >> >> >> >> In a 1966 paper, Hugo already used intensities from overlapping Bragg >> peaks. Along with others with the same problem, he then tried to fit >> multiple peaks to overlapping regions, but with limited success. As well, a >> neutron powder pattern took a whole week to collect, and the local >> Electrologica-X1 >> computer <https://ub.fnwi.uva.nl/computermuseum/X1.php> was less
RE: The passing of Hugo Rietveld
This is a very sad day for the powder diffraction community. Any words I write here cannot add in any meaningful way to the email that was received by members of the mailing list earlier today. What I can say is that discussions will start behind the scenes (and sometimes in front of them) to come up with a fitting way to remember his contributions through the coming generations. It should not be forgotten that there was a genuine person behind the genesis of the method that most of us use (and will continue to use) on a daily basis. Best regards Pam Dr Pamela Whitfield MRSC CChem Instrument Scientist – POWGEN Spallation Neutron Source Oak Ridge National Laboratory PO Box 2008, MS-6475 Oak Ridge, TN 37831-6475 Tel: (865) 235-2605 Fax: (865) 574-6080 Chair: IUCr Commission on Powder Diffraction From: rietveld_l-requ...@ill.fr [mailto:rietveld_l-requ...@ill.fr] On Behalf Of Alan Hewat Sent: Tuesday, July 19, 2016 8:58 AM To: rietveld_l@ill.fr Subject: The passing of Hugo Rietveld The passing of Hugo Rietveld, on the 50th anniversary of Rietveld Refinement and the 100th anniversary of Powder Diffraction It is our sad duty to report the death of Hugo Rietveld at the age of 84 after a short illness. He leaves behind his wife, a son and two daughters to whom we extend our heartfelt sympathy on behalf of the more than one thousand members of the Rietveld Mailing List. Hugo was born on the 7 March 1932 in The Hague and migrated to Western Australia with his family, where in 1957 he enrolled at the University of WA at the same time as Brian O’Connor and Syd Hall. He obtained his Ph.D. under the supervision of Ted Maslen who had studied under Dorothy Hodgkin at Oxford. Hugo pioneered single crystal neutron diffraction at Lucas Heights Sydney with Terry Sabine, and their first paper was published in Nature in 1961. Clews C J B, Maslen E N, Rietveld H M and Sabine T M (1961) Nature 192 154<http://www.nature.com/nature/journal/v192/n4798/abs/192154a0.html> “X-Ray and Neutron Diffraction Examination of p-Diphenylbenzene" Hugo's experience with manual data collection and refinement convinced him of the need to computerise such tasks, and at Lucas Heights and the UWA he programmed two of the first IBM-1620 mainframes<http://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP1620.html> in Fortran-II. After obtaining his Ph.D. in 1964 with Dorothy Hodgkin as external examiner, (she had received the Nobel Prize for her work on penicillin and vitamin B12), he joined the neutron diffraction group of the Reactor Centrum Nederland in Petten and his interest turned to powder diffraction because large single crystals were not available for the inorganic materials of interest. The young group at Petten including Bert Loopstra, Bob van Laar and Hugo Rietveld first addressed the problem of overlapping powder reflections by using a relatively long neutron wavelength (2.6 Å) with a pyrolytic graphite filter. This spread out the long d-spacing peaks, allowing more of them to be resolved, and is still a good solution for the magnetic structures in which they were interested. However, for structure refinement many peaks were still unresolved, and the shorter d-spacings needed for high atomic resolution could not even be seen. In a 1966 paper, Hugo already used intensities from overlapping Bragg peaks. Along with others with the same problem, he then tried to fit multiple peaks to overlapping regions, but with limited success. As well, a neutron powder pattern took a whole week to collect, and the local Electrologica-X1 computer<https://ub.fnwi.uva.nl/computermuseum/X1.php> was less powerful than the IBM-1620 - and programmed in Algol. It was there and then that the brilliantly simple but profound idea arose of refining the crystal structure together with the parameters describing the peak positions and profiles all together, as published in the famous 1969 paper. Rietveld H M (1969) Journal of Applied Crystallography 22 65-71<http://scripts.iucr.org/cgi-bin/paper?a07067> “A profile refinement method for nuclear and magnetic structures” Hugo distributed his Algol refinement program<http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/46/087/46087996.pdf> widely, but very few papers were initially published using the method. Discouraged by the limited funding available for neutron diffraction, he successfully applied to become head of the library department at Petten. One of us (AH), who had also completed his Ph.D. at Lucas Heights in 1970 and who had moved to Harwell, encountered the same problems with neutron diffraction for structural transitions. On the advice of George Bacon, AH visited Hugo in 1971 and brought back Hugo's new Fortran-II version of the profile refinement program. A Harwell version<http://hewat.net/science/papers/1973_The_Rietveld_Program_for_the_Profile_Refinement_of_%
RE: The passing of Hugo Rietveld
Very sad to hear this news. Dr. Rietveld changed the course of my career. I regret not getting the chance to meet him. William L. (Bill) Reese X-ray Diffraction Laboratory Rietveld Analysis Mineral Quantification Clay Mineralogy (832)624-9030 Lab Building LB 3B 320 22777 Springwoods Village PKWY Spring, TX 77389 bill.l.re...@exxonmobil.com From: rietveld_l-requ...@ill.fr [mailto:rietveld_l-requ...@ill.fr] On Behalf Of Alan Hewat Sent: Tuesday, July 19, 2016 7:58 AM To: rietveld_l@ill.fr Subject: The passing of Hugo Rietveld The passing of Hugo Rietveld, on the 50th anniversary of Rietveld Refinement and the 100th anniversary of Powder Diffraction It is our sad duty to report the death of Hugo Rietveld at the age of 84 after a short illness. He leaves behind his wife, a son and two daughters to whom we extend our heartfelt sympathy on behalf of the more than one thousand members of the Rietveld Mailing List. Hugo was born on the 7 March 1932 in The Hague and migrated to Western Australia with his family, where in 1957 he enrolled at the University of WA at the same time as Brian O’Connor and Syd Hall. He obtained his Ph.D. under the supervision of Ted Maslen who had studied under Dorothy Hodgkin at Oxford. Hugo pioneered single crystal neutron diffraction at Lucas Heights Sydney with Terry Sabine, and their first paper was published in Nature in 1961. Clews C J B, Maslen E N, Rietveld H M and Sabine T M (1961) Nature 192 154<http://www.nature.com/nature/journal/v192/n4798/abs/192154a0.html> “X-Ray and Neutron Diffraction Examination of p-Diphenylbenzene" Hugo's experience with manual data collection and refinement convinced him of the need to computerise such tasks, and at Lucas Heights and the UWA he programmed two of the first IBM-1620 mainframes<http://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP1620.html> in Fortran-II. After obtaining his Ph.D. in 1964 with Dorothy Hodgkin as external examiner, (she had received the Nobel Prize for her work on penicillin and vitamin B12), he joined the neutron diffraction group of the Reactor Centrum Nederland in Petten and his interest turned to powder diffraction because large single crystals were not available for the inorganic materials of interest. The young group at Petten including Bert Loopstra, Bob van Laar and Hugo Rietveld first addressed the problem of overlapping powder reflections by using a relatively long neutron wavelength (2.6 Å) with a pyrolytic graphite filter. This spread out the long d-spacing peaks, allowing more of them to be resolved, and is still a good solution for the magnetic structures in which they were interested. However, for structure refinement many peaks were still unresolved, and the shorter d-spacings needed for high atomic resolution could not even be seen. In a 1966 paper, Hugo already used intensities from overlapping Bragg peaks. Along with others with the same problem, he then tried to fit multiple peaks to overlapping regions, but with limited success. As well, a neutron powder pattern took a whole week to collect, and the local Electrologica-X1 computer<https://ub.fnwi.uva.nl/computermuseum/X1.php> was less powerful than the IBM-1620 - and programmed in Algol. It was there and then that the brilliantly simple but profound idea arose of refining the crystal structure together with the parameters describing the peak positions and profiles all together, as published in the famous 1969 paper. Rietveld H M (1969) Journal of Applied Crystallography 22 65-71<http://scripts.iucr.org/cgi-bin/paper?a07067> “A profile refinement method for nuclear and magnetic structures” Hugo distributed his Algol refinement program<http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/46/087/46087996.pdf> widely, but very few papers were initially published using the method. Discouraged by the limited funding available for neutron diffraction, he successfully applied to become head of the library department at Petten. One of us (AH), who had also completed his Ph.D. at Lucas Heights in 1970 and who had moved to Harwell, encountered the same problems with neutron diffraction for structural transitions. On the advice of George Bacon, AH visited Hugo in 1971 and brought back Hugo's new Fortran-II version of the profile refinement program. A Harwell version<http://hewat.net/science/papers/1973_The_Rietveld_Program_for_the_Profile_Refinement_of_%20Neutron_Diffraction_Powder_Patterns_AERE_R7350-von_Dreele_annotations.pdf>, modified to model the anisotropic vibrations preceding structural transitions, was very successful, both at Harwell and with Brian Fender's students at Oxford, in particular Tony Cheetham and Bob von Dreele. In 1973, when the UK joined the EEC and AH moved to ILL in Grenoble, another Oxford student (WIFD) performed his first neutron powder experiments on AH's new D1A high resolut
Re: The passing of Hugo Rietveld
May he rest in peace. He did a great job for all the crystallographers. Fabrizio Guzzetta Ph.D. student, Dept. Quimica Inorganica y Organica, UJI Castellon de la Plana Spain 2016-07-19 14:57 GMT+02:00 Alan Hewat : > *The passing of Hugo Rietveld, on the 50th anniversary of Rietveld > Refinement and the 100th anniversary of Powder Diffraction* > > It is our sad duty to report the death of Hugo Rietveld at the age of 84 > after a short illness. He leaves behind his wife, a son and two daughters > to whom we extend our heartfelt sympathy on behalf of the more than one > thousand members of the Rietveld Mailing List. > > Hugo was born on the 7 March 1932 in The Hague and migrated to Western > Australia with his family, where in 1957 he enrolled at the University of > WA at the same time as Brian O’Connor and Syd Hall. He obtained his Ph.D. > under the supervision of Ted Maslen who had studied under Dorothy Hodgkin > at Oxford. Hugo pioneered single crystal neutron diffraction at Lucas > Heights Sydney with Terry Sabine, and their first paper was published in > Nature in 1961. > > Clews C J B, Maslen E N, Rietveld H M and Sabine T M (1961) Nature 192 154 > <http://www.nature.com/nature/journal/v192/n4798/abs/192154a0.html> > “X-Ray and Neutron Diffraction Examination of p-Diphenylbenzene" > > Hugo's experience with manual data collection and refinement convinced him > of the need to computerise such tasks, and at Lucas Heights and the UWA he > programmed two of the first IBM-1620 mainframes > <http://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP1620.html> > in > Fortran-II. After obtaining his Ph.D. in 1964 with Dorothy Hodgkin as > external examiner, (she had received the Nobel Prize for her work on > penicillin and vitamin B12), he joined the neutron diffraction group of the > Reactor Centrum Nederland in Petten and his interest turned to powder > diffraction because large single crystals were not available for the > inorganic materials of interest. > > The young group at Petten including Bert Loopstra, Bob van Laar and Hugo > Rietveld first addressed the problem of overlapping powder reflections by > using a relatively long neutron wavelength (2.6 Å) with a pyrolytic > graphite filter. This spread out the long d-spacing peaks, allowing more of > them to be resolved, and is still a good solution for the magnetic > structures in which they were interested. However, for structure refinement > many peaks were still unresolved, and the shorter d-spacings needed for > high atomic resolution could not even be seen. > > In a 1966 paper, Hugo already used intensities from overlapping Bragg > peaks. Along with others with the same problem, he then tried to fit > multiple peaks to overlapping regions, but with limited success. As well, a > neutron powder pattern took a whole week to collect, and the local > Electrologica-X1 > computer <https://ub.fnwi.uva.nl/computermuseum//X1.php> was less > powerful than the IBM-1620 - and programmed in Algol. It was there and > then that the brilliantly simple but profound idea arose of refining the > crystal structure together with the parameters describing the peak > positions and profiles all together, as published in the famous 1969 paper. > > Rietveld H M (1969) Journal of Applied Crystallography 22 65-71 > <http://scripts.iucr.org/cgi-bin/paper?a07067> > “A profile refinement method for nuclear and magnetic structures” > > Hugo distributed his Algol refinement program > <http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/46/087/46087996.pdf> > widely, but very few papers were initially published using the method. > Discouraged by the limited funding available for neutron diffraction, he > successfully applied to become head of the library department at Petten. > > One of us (AH), who had also completed his Ph.D. at Lucas Heights in 1970 > and who had moved to Harwell, encountered the same problems with neutron > diffraction for structural transitions. On the advice of George Bacon, AH > visited Hugo in 1971 and brought back Hugo's new Fortran-II version of the > profile refinement program. A Harwell version > <http://hewat.net/science/papers/1973_The_Rietveld_Program_for_the_Profile_Refinement_of_%20Neutron_Diffraction_Powder_Patterns_AERE_R7350-von_Dreele_annotations.pdf>, > modified to model the anisotropic vibrations preceding structural > transitions, was very successful, both at Harwell and with Brian Fender's > students at Oxford, in particular Tony Cheetham and Bob von Dreele. > > In 1973, when the UK joined the EEC and AH moved to ILL in Grenoble, > another Oxford student (WIFD) performed his first neutron powder > experiments on AH's new D1A high
The passing of Hugo Rietveld
*The passing of Hugo Rietveld, on the 50th anniversary of Rietveld Refinement and the 100th anniversary of Powder Diffraction* It is our sad duty to report the death of Hugo Rietveld at the age of 84 after a short illness. He leaves behind his wife, a son and two daughters to whom we extend our heartfelt sympathy on behalf of the more than one thousand members of the Rietveld Mailing List. Hugo was born on the 7 March 1932 in The Hague and migrated to Western Australia with his family, where in 1957 he enrolled at the University of WA at the same time as Brian O’Connor and Syd Hall. He obtained his Ph.D. under the supervision of Ted Maslen who had studied under Dorothy Hodgkin at Oxford. Hugo pioneered single crystal neutron diffraction at Lucas Heights Sydney with Terry Sabine, and their first paper was published in Nature in 1961. Clews C J B, Maslen E N, Rietveld H M and Sabine T M (1961) Nature 192 154 <http://www.nature.com/nature/journal/v192/n4798/abs/192154a0.html> “X-Ray and Neutron Diffraction Examination of p-Diphenylbenzene" Hugo's experience with manual data collection and refinement convinced him of the need to computerise such tasks, and at Lucas Heights and the UWA he programmed two of the first IBM-1620 mainframes <http://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP1620.html> in Fortran-II. After obtaining his Ph.D. in 1964 with Dorothy Hodgkin as external examiner, (she had received the Nobel Prize for her work on penicillin and vitamin B12), he joined the neutron diffraction group of the Reactor Centrum Nederland in Petten and his interest turned to powder diffraction because large single crystals were not available for the inorganic materials of interest. The young group at Petten including Bert Loopstra, Bob van Laar and Hugo Rietveld first addressed the problem of overlapping powder reflections by using a relatively long neutron wavelength (2.6 Å) with a pyrolytic graphite filter. This spread out the long d-spacing peaks, allowing more of them to be resolved, and is still a good solution for the magnetic structures in which they were interested. However, for structure refinement many peaks were still unresolved, and the shorter d-spacings needed for high atomic resolution could not even be seen. In a 1966 paper, Hugo already used intensities from overlapping Bragg peaks. Along with others with the same problem, he then tried to fit multiple peaks to overlapping regions, but with limited success. As well, a neutron powder pattern took a whole week to collect, and the local Electrologica-X1 computer <https://ub.fnwi.uva.nl/computermuseum//X1.php> was less powerful than the IBM-1620 - and programmed in Algol. It was there and then that the brilliantly simple but profound idea arose of refining the crystal structure together with the parameters describing the peak positions and profiles all together, as published in the famous 1969 paper. Rietveld H M (1969) Journal of Applied Crystallography 22 65-71 <http://scripts.iucr.org/cgi-bin/paper?a07067> “A profile refinement method for nuclear and magnetic structures” Hugo distributed his Algol refinement program <http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/46/087/46087996.pdf> widely, but very few papers were initially published using the method. Discouraged by the limited funding available for neutron diffraction, he successfully applied to become head of the library department at Petten. One of us (AH), who had also completed his Ph.D. at Lucas Heights in 1970 and who had moved to Harwell, encountered the same problems with neutron diffraction for structural transitions. On the advice of George Bacon, AH visited Hugo in 1971 and brought back Hugo's new Fortran-II version of the profile refinement program. A Harwell version <http://hewat.net/science/papers/1973_The_Rietveld_Program_for_the_Profile_Refinement_of_%20Neutron_Diffraction_Powder_Patterns_AERE_R7350-von_Dreele_annotations.pdf>, modified to model the anisotropic vibrations preceding structural transitions, was very successful, both at Harwell and with Brian Fender's students at Oxford, in particular Tony Cheetham and Bob von Dreele. In 1973, when the UK joined the EEC and AH moved to ILL in Grenoble, another Oxford student (WIFD) performed his first neutron powder experiments on AH's new D1A high resolution diffractometer, where a powder pattern took only one day to collect, and later only one hour. Again this work was very successful, and the number of papers using what Terry Sabine, in 1978, christened the "Rietveld Method" exploded, supported by new computer programs including those of the early Oxford-Grenoble champions Bob von Dreele and Juan Rodriguez-Carvajal. Yet it was not until 1977 that R.A. Young and colleagues applied the method to X-ray powder diffraction, leading to further rapid growth in the number of publications. Thousands of X-ray publicatio