Abstract: A new method of XANES registration has been designed and realised at VEPP-3. Traditionally, the monochromator rotation is used for the energy scanning. In this new method, the position of the monochromator is fixed, but the position of the electron beam is changed by the magnetic field. As a result, the angle SRbeam/ monochromator is changed thus changing the energy of the monochromatic beam. We registered test-XANES spectra of Ag by electron beam position scanning and then used this method to investigate fast Ag reduction from organometallic compounds. Depending on the type of monochromator and on the energy interval, XAFS spectra may be measured now within 6-20 s. Traditional QEXAFS has a natural limit, depending on the mass of the crystal of the monochromator, holder and translation stage. The mass of the electrons in the bunch is very small and there is no limit for fast scanning. The use of an undulator as synchrotron radiation source can improve the time resolution of this method by several orders of magnitude and reach nanosecond region.

Cite: Nikitenko S.G. , Tolochko B.P. , Aleshaev A.N. , Kulipanov G.N. , Mishnev S.I.
XANES Registration by Electron Beam Position Scanning for Time-Resolved Experiment
Journal De Physique IV : JP. 1997. V.7. NC2. P.549-552. DOI: 10.1051/jp4/1997093 WOS Scopus РИНЦ ANCAN OpenAlex

Dates:

Published print:

Apr 1, 1997

Identifiers:

Web of science:	WOS:A1997XQ95100175
Scopus:	2-s2.0-0003588508
Elibrary:	15021930
Chemical Abstracts:	1997:546636
Chemical Abstracts (print):	127:240488
OpenAlex:	W2065215218

Citing:

DB	Citing
Web of science	6
Scopus	3
OpenAlex	1

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