Water confined in Vycor glass. I. A neutron diffraction study
Water confined in Vycor glass. I. A neutron diffraction study
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水被限制在 Vycor 玻璃中。
DOI：
10.1063/1.476698
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发表时间：
1998
影响因子：
4.4
通讯作者：
A. Soper
中科院分区：
文献类型：
--
作者：
F. Bruni;M. Ricci;A. Soper
中子衍射实验与同位素取代水局限在多孔Vycor玻璃在两个水合状态，并分析了实验可访问的网站网站的分布函数。这些功能的偏见，以及它们的局限性，由于存在的区域，水分子是不允许的（排除体积效应），和水-Vycor干扰的贡献，测量的横截面，进行了讨论。特别地，首次估计了这些互相关项的相对权重。结果表明，传统的衍射数据分析忽略了互相关，可能是错误的。第二号文件[A]报告了对排除在外的数量效应的全面说明。Soper，F. Bruni和M. A. Ricci，J.Chem.Phys.109，1486（1998），以下论文]。
Neutron diffraction experiments with isotopic substitution on water confined in porous Vycor glass at two hydration states are presented and analyzed in terms of the experimentally accessible site-site distribution functions. The bias on these functions as well as their limitations, due to the presence of regions where water molecules are not allowed (excluded volume effects), and to the contribution of water–Vycor interference to the measured cross sections, are discussed. In particular the relative weight of these cross correlation terms is estimated for the first time. It is shown that the traditional analysis of diffraction data of these kinds which ignore cross correlations may be erroneous. A full account of the excluded volume effects is reported in paper II [A. Soper, F. Bruni, and M. A. Ricci, J. Chem. Phys. 109, 1486 (1998), following paper].