Accurate measurements of intrinsic scattering from window materials by use of a vacuum camera
Accurate measurements of intrinsic scattering from window materials by use of a vacuum camera
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使用真空相机精确测量窗户材料的固有散射
DOI：
10.1107/s0021889813002628
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
M. Takata
中科院分区：
文献类型：
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作者：
H. Masunaga;K. Sakurai; I. Akiba,K. Ito;M. Takata
用真空照相机测量了同步加速器常用的8种窗口材料的本征散射，测量范围为0.07<；q<；4 nm−1。广泛用作真空室窗口材料的聚酰亚胺薄膜在Q=0.8和4 nm−1处产生两个峰，而聚醚-醚-酮则没有Bragg峰，尽管在整个Q范围内有较高的背景散射.当比较天然云母、合成云母、石英玻璃、铍、氮化硅和碳化硅时，合成云母在0.6<；q<；5 nm−1范围内的散射最小，表明它是最适合这一Q范围的窗口材料。
The intrinsic scattering from eight window materials commonly used at synchrotron facilities has been evaluated in the range 0.07 < q < 4 nm−1 by the use of a vacuum camera. Poly(oxydiphenylene-pyromellitimide) film, a polyimide film widely used as a window material for vacuum chambers, gave rise to two peaks at q = 0.8 and 4 nm−1. Poly(ether-ether-ketone) gave no Bragg peaks, although the background scattering was relatively high over the entire q range. When natural mica, synthetic mica, quartz glass, beryllium, silicon nitride and silicon carbide were compared, synthetic mica showed the lowest scattering in the range 0.6 < q < 5 nm−1, indicating that it is the most suitable window material for this q range.