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

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

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 h

Re: [ccp4bb] Basic Anomalous Scattering Theory

2015-03-12 Thread Ethan A Merritt
t; > > 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 Theo

Re: [ccp4bb] Basic Anomalous Scattering Theory

2015-03-12 Thread Frank von Delft
n 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 specific things are happen

Re: [ccp4bb] Basic Anomalous Scattering Theory

2015-03-12 Thread Keller, Jacob
ISCMAIL.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 electrons at anomalous edges. Specifically, for example, to what energy of electron-transition does the x-ray k-edge c

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 cle

Re: [ccp4bb] Basic Anomalous Scattering Theory

2015-03-12 Thread Boaz Shaanan
-8-646-1710 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 understand

[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 actu

Re: [ccp4bb] Basic Anomalous Scattering Theory

2015-03-11 Thread William G. Scott
> On Mar 11, 2015, at 11:13 AM, Keller, Jacob 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, electron distributions w

Re: [ccp4bb] Basic Anomalous Scattering Theory

2015-03-11 Thread Keller, Jacob
ons 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 Scatter

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 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 in