Re: [ccp4bb] Basic Anomalous Scattering Theory

2015-03-13 Thread Colin Nave
] Basic Anomalous Scattering Theory Note that this can lead to anomalous scattering of the incident soldiers. But it would unfortunately not be imaginary—it would be altogether too real! Ethan But yes, it works for pianos too. Ethan -- Ethan A Merritt Biomolecular Structure

[ccp4bb] Basic Anomalous Scattering Theory

2015-03-12 Thread Keller, Jacob
Dear Crystallographers, I have had only a vague understanding of what specific things are happening with shell electrons at anomalous edges. Specifically, for example, to what energy of electron-transition does the x-ray k-edge correspond in terms of orbitals, and is that transition energy

Re: [ccp4bb] Basic Anomalous Scattering Theory

2015-03-12 Thread Philip Kiser
Hi Jacob, Concerning orbital transitions occurring around the absorption edge, in addition to the other helpful suggestions, I would suggest looking at review papers on the fundamentals of x-ray absorption spectroscopy. For example: Yano and Yachandra, Photosynthesis Research, 2009 102:241-254

Re: [ccp4bb] Basic Anomalous Scattering Theory

2015-03-12 Thread Keller, Jacob
: [ccp4bb] Basic Anomalous Scattering Theory Dear Crystallographers, I have had only a vague understanding of what specific things are happening with shell electrons at anomalous edges. Specifically, for example, to what energy of electron-transition does the x-ray k-edge correspond in terms

Re: [ccp4bb] Basic Anomalous Scattering Theory

2015-03-12 Thread Keller, Jacob
Note that this can lead to anomalous scattering of the incident soldiers. But it would unfortunately not be imaginary—it would be altogether too real! Ethan But yes, it works for pianos too. Ethan -- Ethan A Merritt Biomolecular Structure Center, K-428 Health Sciences Bldg

Re: [ccp4bb] Basic Anomalous Scattering Theory

2015-03-12 Thread Frank von Delft
@JISCMAIL.AC.UK] on behalf of Keller, Jacob [kell...@janelia.hhmi.org] Sent: Wednesday, March 11, 2015 6:57 PM To: CCP4BB@JISCMAIL.AC.UK Subject: [ccp4bb] Basic Anomalous Scattering Theory Dear Crystallographers, I have had only a vague understanding of what specific things are happening with shell

Re: [ccp4bb] Basic Anomalous Scattering Theory

2015-03-12 Thread Ethan A Merritt
On Thursday, 12 March, 2015 10:41:46 Ethan A Merritt wrote: On Thursday, 12 March, 2015 13:11:10 Keller, Jacob wrote: If projects a middle-C-tone into a piano, do all of the lower notes resonate as well, according to the Kramers-Kronig relation? If you press the right pedal the harmonics

Re: [ccp4bb] Basic Anomalous Scattering Theory

2015-03-12 Thread Boaz Shaanan
From: CCP4 bulletin board [CCP4BB@JISCMAIL.AC.UK] on behalf of Keller, Jacob [kell...@janelia.hhmi.org] Sent: Wednesday, March 11, 2015 6:57 PM To: CCP4BB@JISCMAIL.AC.UK Subject: [ccp4bb] Basic Anomalous Scattering Theory Dear Crystallographers, I have had only a vague understanding of what

Re: [ccp4bb] Basic Anomalous Scattering Theory

2015-03-11 Thread Bernhard Rupp (Hofkristallrat a.D.)
Subject: [ccp4bb] Basic Anomalous Scattering Theory Dear Crystallographers, I have had only a vague understanding of what specific things are happening with shell electrons at anomalous edges. Specifically, for example, to what energy of electron-transition does the x-ray k-edge correspond

Re: [ccp4bb] Basic Anomalous Scattering Theory

2015-03-11 Thread William G. Scott
Hi Jacob: If you can find a copy of R. W. James, THE CRYSTALLINE STATE VOL II: THE OPTICAL PRINCIPLES OF THE DIFFRACTION OF X-RAYS. Hardcover – 1965, this gives a very good (albeit primarily classical) description. Blundell and Johnson also has a good, slightly more modern, description, which

Re: [ccp4bb] Basic Anomalous Scattering Theory

2015-03-11 Thread Keller, Jacob
in the crystal, and these do not create an anomalous effect. JPK -Original Message- From: CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] On Behalf Of Keller, Jacob Sent: Wednesday, March 11, 2015 12:58 PM To: CCP4BB@JISCMAIL.AC.UK Subject: [ccp4bb] Basic Anomalous Scattering Theory Dear

Re: [ccp4bb] Basic Anomalous Scattering Theory

2015-03-11 Thread William G. Scott
On Mar 11, 2015, at 11:13 AM, Keller, Jacob kell...@janelia.hhmi.org wrote: Somebody sent me a pdf with such a mind-picture which describes the origin of the anomalous effect as arising from broken centrosymmetry of the anomalous atoms themselves: (p. 8) Under normal conditions,