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
收藏
页码：252 / 256
页数：5
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