Threshold photoelectron spectroscopy of H2O and D2O over the photon energy range 12-40 eV

被引：59

作者：

Truong, S. Y. ^{[2
]}

Yencha, A. J. ^{[1
]}

Juarez, A. M. ^{[3
]}

Cavanagh, S. J. ^{[2
]}

Bolognesi, P. ^{[4
]}

King, G. C. ^{[2
]}

机构：

[1] SUNY Albany, Dept Chem, Albany, NY 12222 USA

[2] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England

[3] Univ Nacl Autonoma Mexico, Inst Ciencias Fis, Cuernavaca 62251, Morelos, Mexico

[4] Area Ric Roma 1, IMIP, CNR, Rome, Italy

来源：

CHEMICAL PHYSICS | 2009年 / 355卷 / 2-3期

基金：

英国工程与自然科学研究理事会;

关键词：

Threshold photoelectron spectroscopy; Photoionization of water; Synchrotron radiation; PAR IMPACT ELECTRONIQUE; WATER-VAPOR; SPECTRA; VALENCE; PHOTOIONIZATION; MOLECULES; IONS; SURFACE; STATES;

D O I：

10.1016/j.chemphys.2008.12.009

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：

The threshold photoelectron spectra of H2O and D2O have been recorded over the ionization region (12-40 eV) under high-resolution conditions using synchrotron radiation. Extensive vibrational 'filling-in' is found in the Franck-Condon gap regions between the three lowest ionic-state band systems that is attributed to autoionization of Rydberg states lying in these binding-energy regions. Vibronic coupling effects are found in the A (2)A(1) band system of H2O+ and D2O+ in general agreement with a previous experiment. An unusual intensity enhancement is found in the B B-2(2) band system in the threshold photoelectron spectra of H2O and D2O that is attributed to an enhanced production of H2O+ and D2O+ ions due to the autoionization of Rydberg states lying in the binding energy region of this electronic state. In the inner valence ionization region two broad features have been found that are attributed to the (2a(1))(-1) 'main-line' state and the (1b(1))(1)4a(i) resonant state. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：183 / 193

页数：11

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