Metastable atomic ion production in electron-O2 collisions

被引：4

作者：

Corr, J. J. ^{[1
]}

Khakoo, M. A. ^{[1
]}

McConkey, A. G. ^{[1
]}

McConkey, J. W. ^{[1
]}

机构：

[1] Univ Windsor, Dept Phys, Windsor, ON N9B 3P4, Canada

来源：

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY | 2015年 / 376卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Electron-impact; O-2; Metastable O+; Ionization; Rare-gas matrix; IONIZATION CROSS-SECTIONS; DISSOCIATIVE IONIZATION; IMPACT DISSOCIATION; ANGULAR-DISTRIBUTIONS; KINETIC-ENERGY; OXYGEN; O2; N2; MOLECULES; O-2;

D O I：

10.1016/j.ijms.2014.11.002

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Pulsed electron impact ionization, time-of-flight (TOF) spectroscopy and a novel detector are used to study the production of metastable O+ in e-O-2 collisions in the electron energy range from threshold to 450 eV. Measured fragment ion kinetic energies are in the range 2-20 eV. The ions are identified as being in the P-2 state within the ground 2p(3) configuration. Peak metastable ion production occurs at an electron energy of similar to 130 eV in agreement with the energy for maximum production of all O+ ions but the fall off in ionization efficiency toward higher incident electron energies is faster in the metastable case. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：19 / 22

页数：4

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