Photoelectron spectroscopy under ambient pressure and temperature conditions
Photoelectron spectroscopy under ambient pressure and temperature conditions
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DOI：
10.1016/j.nima.2008.12.155
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发表时间：
2009-03-21
影响因子：
1.4
通讯作者：
Salmeron, Miquel
中科院分区：
文献类型：
--
作者：
Ogletree, D. Frank;Bluhm, Hendrik;Salmeron, Miquel
我们描述了在压力和温度的环境条件下，固体或液体表面存在气体的光电发射光谱的新型仪器的发展和应用。新仪器通过使用靠近表面的孔径和微分泵浦静电透镜系统克服了气体中电子的强散射。除了散射问题，在存在冷凝水或其他液体的实验中，需要开发特殊的样品容器来提供局部冷却。我们讨论了在同步加速器光源（伯克利的ALS和柏林的BESSY）上开发的前两代环境压力光电发射光谱（APPES）仪器，特别关注伯克利仪器。在环境科学和催化化学研究中的应用用两个例子来说明。Elsevier B.V.出版
We describe the development and applications of novel instrumentation for photoemission spectroscopy of solid or liquid surfaces in the presence of gases under ambient conditions of pressure and temperature. The new instrument overcomes the strong scattering of electrons in gases by the use of an aperture close to the surface followed by a differentially-pumped electrostatic lens system. In addition to the scattering problem, experiments in the presence of condensed water or other liquids require the development of special sample holders to provide localized cooling. We discuss the first two generations of Ambient Pressure PhotoEmission Spectroscopy (APPES) instruments developed at synchrotron light sources (ALS in Berkeley and BESSY in Berlin), with special focus on the Berkeley instruments. Applications to environmental science and catalytic chemical research are illustrated in two examples. Published by Elsevier B.V.