Photodissociation as a probe of the H3+ avoided crossing seam
Experiments are conducted to investigate the role of the avoided crossing seam in the photodissociation of H 3 + . Three-dimensional imaging of dissociation products is used to determine the kinetic energy release and branching ratio among the fragmentation channels. Vibrational distributions are me...
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| Published in | Philosophical transactions of the Royal Society of London. Series A: Mathematical, physical, and engineering sciences Vol. 377; no. 2154; p. 20180399 |
|---|---|
| Main Authors | , , , , |
| Format | Journal Article |
| Language | English |
| Published |
The Royal Society Publishing
23.09.2019
|
| Online Access | Get full text |
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| Summary: | Experiments are conducted to investigate the role of the avoided crossing seam in the photodissociation of H
3
+
. Three-dimensional imaging of dissociation products is used to determine the kinetic energy release and branching ratio among the fragmentation channels. Vibrational distributions are measured by dissociative charge transfer of H
+
2
products. It is found that the photodissociation of hot H
3
+
in the near-ultraviolet produces cold H
+
2
, but hot H
2
. Modelling the wavepacket dynamics along the repulsive potential energy surface accounts for the repopulation of the ground potential energy surface. The role of the avoided crossing seam is emphasized and its importance for the astrophysically relevant charge transfer reactions underlined.
This article is part of a discussion meeting issue ‘Advances in hydrogen molecular ions: H
3
+
, H
5
+
and beyond’. |
|---|---|
| Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Electronic supplementary material is available online at https://doi.org/10.6084/m9.figshare.c.4545491. One contribution of 18 to a discussion meeting issue ‘Advances in hydrogen molecular ions: H3+, H5+ and beyond’. |
| ISSN: | 1364-503X 1471-2962 |
| DOI: | 10.1098/rsta.2018.0399 |