RE: Aking for Advice - reduce the current to X-ray tube to avoid director saturation at low angels

We built an automated anti-scatter slit into which you program the divergence slit angle and it adjusts the slit height (over the specimen) with respect to Two-Theta during the scan. Jim James P. Cline Materials Measurement Science Division National Institute of Standards and Technology 100

RE: Parafocussing definition?

the term "parafocusing": 2nd edition, section "parafocusing methods", page 222 ff. Cheers, Arnt From: rietveld_l-requ...@ill.fr<mailto:rietveld_l-requ...@ill.fr> [mailto:rietveld_l-requ...@ill.fr<mailto:rietveld_l-requ...@ill.fr>] On Behalf Of Eduard E. Levin Sent: Monta

RE: Parafocussing definition?

Bob Cheary and I developed and presented a workshop several times in the 1990’s that included a discussion of this issue. I can send you the notes for it if you would like them. Jim James P. Cline Materials Measurement Science Division National Institute of Standards and Technology 100

RE: CrySize error in TOPAS

By what metric are you determining that the CrySize value is in error? James P. Cline Materials Measurement Science Division   National Institute of Standards and Technology 100 Bureau Dr. stop 8520 [ B113 / Bldg 217 ] Gaithersburg, MD 20899-8523    USA jcl...@nist.gov (301) 975

RE: CrySize error in TOPAS

esday, July 27, 2016 1:08 PM To: Cline, James Dr. (Fed) <james.cl...@nist.gov> Cc: rietveld_l@ill.fr; "Łukasz Kruszewski" <lkruszew...@twarda.pan.pl> Subject: RE: CrySize error in TOPAS Hello James. I just read the error that is reported for each refined parameter in

RE: order of Spherical Harmonics for correction of PO

OK, can you list the citations for the papers in question? Jim James P. Cline Materials Measurement Science Division National Institute of Standards and Technology 100 Bureau Dr. stop 8520 [ B113 / Bldg 217 ] Gaithersburg, MD 20899-8523USA jcl...@nist.gov (301) 975

RE: U,V,W cagliotti peak width parameters

As Alan states, the U, V, and W terms are often employed in situations where their physical meaning is minimal: http://nvlpubs.nist.gov/nistpubs/jres/120/jres.120.013.pdf Jim James P. Cline Materials Measurement Science Division National Institute of Standards and Technology 100 Bureau Dr.

SRM 1979 now available

Hi all, The new NIST SRM for analysis of crystallite size that I have spoken about on a number of occasions over the years is now available. SRM 1979 - Powder Diffraction Line Profile Standard for Crystallite Size Analysis (Nano-Crystalline ZnO Powder)

RE: How much COD and PDF database gives the complete known structures?

This should be fun to watch… James P. Cline Materials Measurement Science Division National Institute of Standards and Technology 100 Bureau Dr. stop 8520 [ B113 / Bldg 217 ] Gaithersburg, MD 20899-8523USA jcl...@nist.gov (301) 975 5793 FAX (301) 975 5334 From:

RE: Stoichiometry and occupancy fractions of solid solutions

Your data is from where? I wouldn't trust numbers from refinements as these from lab data. Jim James P. Cline Materials Measurement Science Division National Institute of Standards and Technology 100 Bureau Dr. stop 8520 [ B113 / Bldg 217 ] Gaithersburg, MD 20899-8523USA

RE: Stoichiometry and occupancy fractions of solid solutions

Luca, I'd be interested to read your article, but I'm not about to join researchgate to do so. Jim James P. Cline Materials Measurement Science Division National Institute of Standards and Technology 100 Bureau Dr. stop 8520 [ B113 / Bldg 217 ] Gaithersburg, MD 20899-8523USA

RE: using Zero

egards from Bremen, Johannes Am 29.03.2017 um 15:54 schrieb Cline, James Dr. (Fed): Hi, Seems everyone has beaten on this matter quite well. I humbly offer this paper: http://nvlpubs.nist.gov/nistpubs/jres/120/jres.120.013.pdf which discusses how you can experimentally determine (eliminate) th

RE: using Zero

Hi, Seems everyone has beaten on this matter quite well. I humbly offer this paper: http://nvlpubs.nist.gov/nistpubs/jres/120/jres.120.013.pdf which discusses how you can experimentally determine (eliminate) the zero error with considerable certainly. You should consider what you know the

Cu K alpha Spectrum

Hi all, We now have a paper concerning the NIST opinion as to the nature of the Cu K* emission spectrum. Please see: http://iopscience.iop.org/article/10.1088/1361-6455/aa6c4a/meta;jsessionid=0F01A1609C56F9C09F01B4DBA2B997A8.ip-10-40-1-105 Regards, Jim James P. Cline Materials Measurement

RE: Mixed refinement Topas example

François, Somewhat more than slightly curious: Why do you want to use Topas in GUI mode? Jim James P. Cline Materials Measurement Science Division   National Institute of Standards and Technology 100 Bureau Dr. stop 8520 [ B113 / Bldg 217 ] Gaithersburg, MD 20899-8523    USA