X-ray emission-photoion coincidence spectroscopy of the CO2 molecule at the O 1s edge

被引：4

作者：

Kivimaeki, A. ^{[1
]}

Alagia, M. ^{[1
]}

Richter, R. ^{[2
]}

机构：

[1] Lab TASC, CNR IOM, I-34149 Trieste, Italy

[2] Sincrotrone Trieste, I-34149 Trieste, Italy

来源：

CHEMICAL PHYSICS LETTERS | 2012年 / 531卷

关键词：

CARBON-DIOXIDE; PHOTOELECTRON-SPECTRUM; SYMMETRY-BREAKING; CROSS-SECTIONS; GAS-PHASE; CORE; EXCITATIONS; IONIZATION; THRESHOLD; ENERGY;

D O I：

10.1016/j.cplett.2012.02.022

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：

Molecular dissociation following radiative decay of O 1s hole states in CO2 has been studied by detecting photoions in coincidence with undispersed soft X-ray emission. The production of ions after radiative decay is observed to increase from practically nothing at the O 1s -> pi* excitation to the appearance of CO2+, CO+, C+ and O+ ions when core-valence double excitations and O 1s shake-up transitions are induced. De-excitation pathways involving radiative decay from different core-hole states are discussed in order to interpret the results. A weak CO22+ signal is attributed to the radiative Auger effect. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：252 / 256

页数：5

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