Determination of the distribution of elements with similar electron counts: a practical guide for resonant X‐ray scattering
Determination of the distribution of elements with similar electron counts: a practical guide for resonant X‐ray scattering
复制标题
确定具有相似电子数的元素分布:共振 X 射线散射实用指南
DOI:
10.1107/s0021889813008923
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发表时间:
2013
影响因子:
6.1
通讯作者:
O. Oeckler
中科院分区:
文献类型:
--
作者:
S. Welzmiller;P. Urban;F. Fahrnbauer;L. Erra;O. Oeckler
This article attempts to present straightforward and easy-to-understand guidelines for the determination of element distribution in compounds lacking X-ray scattering contrast because they have similar electron counts. Different sources of anomalous dispersion correction terms (especially Δf′ values) are compared with respect to their suitability, reliability and quality. Values from databases are compared with Δf values calculated from fluorescence spectra and those refined from single-crystal diffraction data, using both reference crystals without scattering contrast problems and crystals containing elements with similar electron counts. The number of data sets required to determine reliably the element distribution and the optimum wavelengths to be used are discussed. Joint multiple data set refinements are suitable for the refinement of multiply mixed occupancies of elements lacking scattering contrast. The most straightforward method of obtaining Δf′ values depends on the complexity of the problem to be solved and the precision required.
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影响因子:
56.9
作者:
HENDRICKSON, WA
通讯作者:
HENDRICKSON, WA
影响因子:
6.1
作者:
Yuegang Zhang;A. Wilkinson;P. Lee;S. Shastri;D. Shu;D. Chung;M. Kanatzidis
通讯作者:
M. Kanatzidis
影响因子:
15
作者:
L. K. Templeton;D. H. Templeton;R. Phizackerley
通讯作者:
R. Phizackerley
DOI:
10.1007/bf01328354
发表时间:
1925
期刊:
Zeitschrift für Physik
影响因子:
--
作者:
H. Mark;L. Szilard
通讯作者:
L. Szilard
影响因子:
--
作者:
A. Cheetham;Angus P. Wilkinson
通讯作者:
Angus P. Wilkinson