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SUMMARY:Obtaining Soft X-ray Emission and Absorption Spectra using SR from
  the VEPP-4 storage ring on the metrology station "Cosmos"
DTSTART;VALUE=DATE-TIME:20160705T090000Z
DTEND;VALUE=DATE-TIME:20160705T100000Z
DTSTAMP;VALUE=DATE-TIME:20260316T062908Z
UID:indico-contribution-1172@indico.inp.nsk.su
DESCRIPTION:Speakers: Evgeniy Korotaev (Nikolaev Institute of Inorganic Ch
 emistry  of the Siberian Branch of the Russian Academy of Sciences)\nX-ray
  spectroscopy is powerful tool for investigation of the electronic structu
 re of functional materials. X-ray emission spectra (XES) corresponding tra
 nsition from valence orbitals to core levels allows to obtain information 
 about atomic partial densities of occupied states of the elements in compl
 ex chemical compounds. X-ray absorption near edge structure (XANES) allows
  to study atomic partial densities of unoccupied states.\nUsage of synchro
 tron radiation for obtaining XES and XANES spectra is to essentially incre
 ase quality of experimental data.\nThe experimental equipment of the "Cosm
 os"- synchrotron station was adjusted for obtaining soft XES-spectra of re
 ference samples (quartz glass\, aluminum and copper foils). In the present
  work were used two different optic schemes: flat (Bragg-scheme) and cylin
 drically bent crystals (Iogan’s scheme).   Using the cylindrically bent 
 crystal geometry has shown best result in obtaining soft XES-spectra.\nAls
 o it was a special interest to obtain soft X-ray absorption spectra. For o
 btaining such spectra the double crystal scheme was used. Thus fine struct
 ure of soft X-ray absorption spectra was recorded for reference samples (a
 luminum\, copper foils).\nExperimental XES and XANES spectra were compared
  with the spectra obtained on a laboratory X-ray spectrometer and the resu
 lts of the quantum-chemical calculations.\nThe authors are grateful to pro
 f. L.N. Mazalov for useful discussions of experimental data.\n\nhttps://in
 dico.inp.nsk.su/event/3/contributions/1172/
LOCATION:Budker INP 2nd and 3rd floors
URL:https://indico.inp.nsk.su/event/3/contributions/1172/
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