結(jié)晶學(xué)chap4atomicscattering(編輯修改稿)
2025-02-12 09:44 本頁面
【文章內(nèi)容簡介】 Anomalous scattering terms ?f’ and f” for： (a) gadolinium near the L3 edge； (b) samarium near the L3 edge Fig. : Plot in the plex plane of ?f’ ? i f”： (c) gadolinium near the L3 edge； (d) samarium near the L3 edge Atomic ?f’ and f” pt. charge atomic sphere (fixed atom at ri) T=0K with thermal vibration T as function of 2sin()??B : Thermal parameter Z sin()? ?B = 0 B 0 ? ? ? ???? ? 39。s i n0 fifff ii ???????????Atomic amplitude with anomalous scattering Nuclear thermal parameter: B。 thermal vibration T = B (sin?/?)2 Considering nuclear thermal vibration ? ? 122 ????? TTB i s o ??? ? ? )( s i nthermal vibration ? electron density smearing if isotropic ? spherically symmetric As a point scatterer, fj 197。 2 f ac t oret e m pe r at urToff un c t i onaisToff un c t i onaisf j:s i ns i n22????inv i b r a t i o nofa mp l i t u d es q u a r em e a nuuB i s o
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