Single-photon double and triple ionization of acetaldehyde (ethanal) studied by multi-electron coincidence spectroscopy

被引：8
作者：
Zagorodskikh, S. [1 ,2 ]
Zhaunerchyk, V. [1 ,2 ]
Mucke, M. [1 ]
Eland, J. H. D. [1 ,2 ,3 ]
Squibb, R. J. [1 ,2 ]
Karlsson, L. [1 ]
Linusson, P. [4 ]
Feifel, R. [1 ,2 ]
机构：
[1] Uppsala Univ, Dept Phys & Astron, SE-75120 Uppsala, Sweden
[2] Univ Gothenburg, Dept Phys, SE-41296 Gothenburg, Sweden
[3] Univ Oxford, Dept Chem, Phys & Theoret Chem Lab, Oxford OX1 3QZ, England
[4] Stockholm Univ, AlbaNova Univ Ctr, Dept Phys, SE-10691 Stockholm, Sweden
来源：
CHEMICAL PHYSICS | 2015年 / 463卷
基金：
瑞典研究理事会;
关键词：
Acetaldehyde; Double ionization; Triple ionisation; Site-specific Auger decay; DOUBLE PHOTOIONIZATION SPECTRA; TOF-PEPECO MEASUREMENTS; PHOTOELECTRON-SPECTRA; SHAKE-UP; SMALL MOLECULES; AUGER-SPECTRA; HELIUM; DISTRIBUTIONS; FORMALDEHYDE; SATELLITES;
D O I：
10.1016/j.chemphys.2015.10.006
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：
Single-photon multiple ionization processes of acetaldehyde (ethanal) have been experimentally investigated by utilizing a multi-particle coincidence technique based on the time-of-flight magnetic bottle principle, in combination with either a synchrotron radiation source or a pulsed helium discharge lamp. The processes investigated include double and triple ionization in the valence region as well as single and double Auger decay of core-ionized acetaldehyde. The latter are studied site-selectively for chemically different carbon core vacancies, scrutinizing early theoretical predictions specifically made for the case of acetaldehyde. Moreover, Auger processes in shake-up and core-valence ionized states are investigated. In the cases where the processes involve simultaneous emission of two electrons, the distributions of the energy sharing are presented, emphasizing either the knock-out or shake-off mechanism. (C) 2015 Published by Elsevier B.V.
引用
收藏
页码：159 / 168
页数：10
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