Dissociations of water ions after valence and inner-valence ionization

被引：4

作者：

Roos, A. Hult ^{[1
]}

Eland, J. H. D. ^{[1
,2
]}

Andersson, J. ^{[1
]}

Squibb, R. J. ^{[1
]}

Feifel, R. ^{[1
]}

机构：

[1] Univ Gothenburg, Dept Phys, Origovagen 6B, S-41296 Gothenburg, Sweden

[2] Univ Oxford, Dept Chem, Phys & Theoret Chem Lab, South Parks Rd, Oxford OX1 3QZ, England

来源：

JOURNAL OF CHEMICAL PHYSICS | 2018年 / 149卷 / 20期

基金：

瑞典研究理事会;

关键词：

PHOTOELECTRON-PHOTOION COINCIDENCE; INTRAMOLECULAR DYNAMICS; COOLED H2O; SPECTRA; SPECTROSCOPY; STATES; PREDISSOCIATION; B2B2; D2O+; DISTRIBUTIONS;

D O I：

10.1063/1.5055593

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：

Energy selected and mass-resolved electron-ion coincidence spectra of heavy water have been recorded for ionization energies from 18 to 35 eV. Dissociation from the (BB2)-B-2 state produces both O+ and D-2(+) at energies near their thermodynamic thresholds in addition to the known products D+ and OD+. The relative yields of O+, OD+, and D+ in the (BB2)-B-2 state breakdown diagram are modulated by the vibrational structure of the B-state population, implying incomplete energy equilibration before fragmentation. Decay from the C-state produces OD+ in addition to the known O+ and D+. The fragment kinetic energies suggest that O+ and D+ from the C state are the products of full atomization of the molecule. Published by AIP Publishing.

引用

页数：7

共 43 条

[1] MOLECULAR PHOTOELECTRON SPECTROSCOPY .6. WATER METHANOL METHANE AND ETHANE [J].