X-ray absorption spectroscopy of liquid surface
X-ray absorption spectroscopy of liquid surface
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液体表面X射线吸收光谱
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
M. Nomura
中科院分区：
文献类型：
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作者：
I. Watanabe;H. Tanida;Sigehiro Kawauchi;M. Harada;M. Nomura
已经构建了一种用于空气/水溶液界面元素的 X 射线吸收光谱的装置。其表面灵敏度是通过全反射条件下同步辐射的掠射获得的。通过总转化He离子产率法检测吸收。该装置在光子工厂的7C光束线上运行，其中入射光子束通过70厘米长的弯曲镜来自矢状聚焦双晶单色仪。镜子将光束垂直聚焦，并将光束方向向下改变 1 mrad 以照射溶液表面。该技术的基本要求是通过在浮船上引入一个槽、连续液面监测和自动 Z 级控制来实现精确位置的无波纹液面。 X射线吸收边跃变表明，溴离子的表面浓度遵循四烷基溴化铵溶液的Langmuir型吸附。通过比较跳跃值...
An apparatus has been constructed for x-ray absorption spectroscopy of elements at air/aqueous solution interface. Its surface sensitivity is gained from glancing incidence of synchrotron radiation under total reflection condition. The absorption is detected by total conversion He ion-yield method. This apparatus was operated at the beam line 7C of Photon Factory, where the incident photon beam comes from a sagittal focus double-crystal monochromator via a 70-cm-long bent mirror. The mirror focuses the beam vertically and changes the beam direction downward by 1 mrad to irradiate solution surface. The essential requirement of this technique, ripple-free liquid surface at accurate position, was attained by introducing a trough on a floating boat, continuous surface level monitoring, and an automatic Z-stage control. The x-ray absorption edge jump demonstrated that surface concentration of bromide ion follows the Langmuir type adsorption for tetraalkylammonuim bromide solution. By comparing the jump values ...