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Influence of polychromaticity on particle structure determination in small-angle X-ray scattering
Wang WJ(王文佳); Chang GC(常广才); Zhang LH(张连辉); Dong YH(董宇辉); 刘鹏(多); Wang, WJ; Shtykova, EV; Volkov, VV; Chang, GC; Zhang, LH; Dong, YH; Liu, P
2015
发表期刊JOURNAL OF APPLIED CRYSTALLOGRAPHY
卷号48页码:1935-1942
通讯作者董宇辉 ; 刘鹏(多)
文章类型Article
摘要Pink beams are now widely used for small-angle X-ray scattering (SAXS) data collection owing to their high intensity. However, the wavelength spread of a pink beam is a factor of 100 higher than that of a monochromatic beam, thus causing the experimental data to be smeared. To reveal the influence of polychromaticity on shape reconstruction, four geometric bodies (sphere, cube, helix and long cylinder) were used for SAXS data analysis. The results reveal that the influence of polychromaticity on the process of shape reconstruction is significantly more dependent on the geometry of the body than on its size. Scattering objects with smoothed scattering curves can tolerate a higher wavelength spread than those with tortuous curves. It is further demonstrated that the structural parameters calculated from the smeared data sets have little deviation from the ideal ones, which indicates the possibility of using a light source with a greater wavelength spread than a conventional pink beam for special time-resolved SAXS experiments. Finally, it is concluded that SAXS data collected in pink-beam mode can be used directly for structural calculations and model reconstructions without a desmearing procedure.
关键词small-angle X-ray scattering polychromatic beams smear effect structural analysis
学科领域Chemistry; Crystallography
DOI10.1107/S1600576715019214
收录类别SCI ; EI ; CA
WOS类目Chemistry, Multidisciplinary ; Crystallography
WOS记录号WOS:000365774800041
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228845
专题多学科研究中心
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GB/T 7714
Wang WJ,Chang GC,Zhang LH,et al. Influence of polychromaticity on particle structure determination in small-angle X-ray scattering[J]. JOURNAL OF APPLIED CRYSTALLOGRAPHY,2015,48:1935-1942.
APA 王文佳.,常广才.,张连辉.,董宇辉.,刘鹏.,...&Liu, P.(2015).Influence of polychromaticity on particle structure determination in small-angle X-ray scattering.JOURNAL OF APPLIED CRYSTALLOGRAPHY,48,1935-1942.
MLA 王文佳,et al."Influence of polychromaticity on particle structure determination in small-angle X-ray scattering".JOURNAL OF APPLIED CRYSTALLOGRAPHY 48(2015):1935-1942.
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