Cl2p, Ols PSD-NEXAFS study of the adsorption of HCl on ice: a direct experimental evidence of the HCl ionization

被引：13

作者：

Bournel, F

Mangeney, C

Tronc, M

Laffon, C

Parent, P

机构：

[1] Univ Paris 11, LURE, F-91898 Orsay, France

[2] Univ Paris 06, Chim Phys Lab, F-75231 Paris 05, France

[3] CNRS UMR 7614, F-75231 Paris 05, France

来源：

SURFACE SCIENCE | 2003年 / 528卷 / 1-3期

关键词：

water; halides; surface chemical reaction; near edge extended X-ray absorption fine structure (NEXAFS); photon stimulated desorption (PSD);

D O I：

10.1016/S0039-6028(02)02637-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have used NEXAFS and photo-stimulated desorption (PSD)-NEXAFS spectroscopy at the O1s and at the Cl2p edges to study H2O and HCl ices, as well as the adsorption of HCl on water ice. The PSD-NEXAFS provides a clear fingerprint of the dangling OH bond at the water ice surface. We evidence the H-Cl fragmentation at the 2p --> sigma*(HCl) excitation of condensed HCl. Last, we directly observe the ionization of HCl when adsorbed on H2O ice, both at the surface and after diffusion in the bulk of ice. (C) 2002 Published by Elsevier Science B.V.

引用

收藏

页码：224 / 229

页数：6

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