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【求助】Fullprof精修中的ATZ参数
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哪位精修高手能不能帮忙解释一下ATZ呢？说明书上只作了如下简单的介绍，本人相关知识有限，搞不太清这些是什么意思，还请各位帮忙解释一下。 Coefficient to calculate the weight percentage of the phase. ATZ=Z Mw f^2/t Z: number of formula units per cell Mw: molecular weight f: Used to transform the site multiplicities For a stoichiometric phase f=1; if these multiplicities are calculated by dividing the Wyckoff multiplicity m of the site by the general multiplicity M. Otherwise , f=occ M/m, where occ is the occupation number. t: Is the Brindley coefficient that accounts for microabsorption effects. It is required for quantitative phase analysis only. When different phases have similar absorption (in most neutron uses), this factor is nearly 1 (in such case ). |
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2楼2010-03-13 14:38:09