Branching ratios in dissociative recombination of formyl and isoformyl cations

被引：5

作者：

Nordhorn, Christian ^{[1
]}

Bing, Dennis ^{[1
]}

Buhr, Henrik ^{[1
]}

Grieser, Manfred ^{[1
]}

Heber, Oded

Krantz, Claude ^{[1
]}

Mendes, Mario B. ^{[1
]}

Repnow, Roland ^{[1
]}

Schwalm, Dirk ^{[1
]}

Shornikov, Andrey ^{[1
]}

Stuetzel, Julia ^{[1
]}

Wolf, Andreas ^{[1
]}

Novotny, Oldrich

Lestinsky, Michael

Larson, Asa

Stenrup, Michael

Orel, Ann E.

机构：

[1] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

来源：

EIGHTH INTERNATIONAL CONFERENCE ON DISSOCIATIVE RECOMBINATION: THEORY, EXPERIMENTS AND APPLICATIONS (DR2010) | 2011年 / 300卷

基金：

美国国家科学基金会;

关键词：

ABUNDANCE; HOC+;

D O I：

10.1088/1742-6596/300/1/012004

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：

The energy dependence of the branching ratios in dissociative recombination of DCO+ with a known small admixture of DOC+ has been measured for collision energies from 0 to 25 eV using an energy- and position-sensitive surface barrier detector which is designed for the analysis of multi-fragment events occurring in a molecular fragmentation study. The measurements are compared with theoretical calculations on the direct mechanism of dissociative recombination of HCO+ including the contribution from HOC+ at the experimental abundance fraction. At low collision energies, dissociative recombination of HCO+ is dominated by dissociation into HCO. For collision energies above 2 eV there is a transition into dissociation to HC + O, which can be explained by electron capture into resonant states. Signatures of DOC+ dissociative recombination are found experimentally and confirmed by the calculations for HOC+. Three-body breakup becomes important for collision energies above 6 eV.

引用

页数：8

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