Extended x‐ray absorption fine structure studies of dense selenium vapor
Extended x‐ray absorption fine structure studies of dense selenium vapor
复制标题
浓硒蒸气的扩展 X 射线吸收精细结构研究
DOI：
10.1063/1.463180
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发表时间：
1992
影响因子：
4.4
通讯作者：
H. Hoshino
中科院分区：
文献类型：
--
作者：
S. Hosokawa;K. Tamura;M. Inui;M. Yao;H. Endo;H. Hoshino
我们首次在高达1600 °C和150 bar的高温和高压下测量了致密硒蒸气的扩展X射线吸收精细结构谱。为了进行实验，我们开发了一个高压容器和一个我们自己设计的多晶蓝宝石电池。结果表明，在本实验条件下，硒蒸气主要由Se_2组成，其键长比液态Se的键长短得多。随着压力的增加，键长略有增加。当接近饱和蒸汽压曲线时，键被大大拉长。
We have measured the extended x‐ray absorption fine structure spectra for dense selenium vapor at high temperatures and pressures up to 1600 °C and 150 bar for the first time. For the experiment, we have developed a high‐pressure vessel and a polycrystalline sapphire cell of our own design. We have found that dense selenium vapor under the present experimental condition consists mainly of Se2 and the bond length is much shorter than that of liquid Se. With increasing pressure the bond length slightly increases. When the saturated vapor‐pressure curve is approached, the bond is largely elongated.