Dissociative excitation and fragmentation cross section of HeH+ molecular ions in collision with He

We investigated H+ and He+ fragment production from the dissociation of HeH+ ions in collision with a He target. This occurs through either the He++H or the He+H+ channel. We also investigated He2+ and H- production, which are three orders of magnitude smaller than those for H+ and He+. The He+/H ch...

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Detalles Bibliográficos
Autores: Yousif, FB, Dominguez, JI
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2002
País:México
Institución:Universidad Nacional Autónoma de México
Repositorio:Sistema de Información de la Facultad de Ciencias, UNAM
OAI Identifier:oai:repositorio.fciencias.unam.mx:11154/2522
Acceso en línea:http://hdl.handle.net/11154/2522
Access Level:acceso abierto
Palabra clave:Optics
Physics, Atomic, Molecular & Chemical
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spelling Dissociative excitation and fragmentation cross section of HeH+ molecular ions in collision with HeYousif, FBDominguez, JIOpticsPhysics, Atomic, Molecular & ChemicalWe investigated H+ and He+ fragment production from the dissociation of HeH+ ions in collision with a He target. This occurs through either the He++H or the He+H+ channel. We also investigated He2+ and H- production, which are three orders of magnitude smaller than those for H+ and He+. The He+/H channel seems to be favored over the H+/He channel at all acceleration energies as well as at all ion source pressures. The H+ and He+ cross sections appear to be independent of the acceleration energy while they show significant dependence on ion source pressures. The center of mass energy distribution for both H+ and He+ shows a kinetic energy release of near zero eV. Our results suggest that the initial state of the parent HeH+ molecular ions is that of a mixture of ground electronic state as well as metastable excited states with the a (3)Sigma(+) dominant.2011-01-22T10:26:53Z2011-01-22T10:26:53Z2002info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1050-2947http://hdl.handle.net/11154/2522219910.1103/PhysRevA.65.05272365(5)reponame:Sistema de Información de la Facultad de Ciencias, UNAMinstname:Universidad Nacional Autónoma de Méxicoinstacron:UNAMenPhysical Review Ainfo:eu-repo/semantics/openAccessoai:repositorio.fciencias.unam.mx:11154/25222025-09-17T19:21:06Z
dc.title.none.fl_str_mv Dissociative excitation and fragmentation cross section of HeH+ molecular ions in collision with He
title Dissociative excitation and fragmentation cross section of HeH+ molecular ions in collision with He
spellingShingle Dissociative excitation and fragmentation cross section of HeH+ molecular ions in collision with He
Yousif, FB
Optics
Physics, Atomic, Molecular & Chemical
title_short Dissociative excitation and fragmentation cross section of HeH+ molecular ions in collision with He
title_full Dissociative excitation and fragmentation cross section of HeH+ molecular ions in collision with He
title_fullStr Dissociative excitation and fragmentation cross section of HeH+ molecular ions in collision with He
title_full_unstemmed Dissociative excitation and fragmentation cross section of HeH+ molecular ions in collision with He
title_sort Dissociative excitation and fragmentation cross section of HeH+ molecular ions in collision with He
dc.creator.none.fl_str_mv Yousif, FB
Dominguez, JI
author Yousif, FB
author_facet Yousif, FB
Dominguez, JI
author_role author
author2 Dominguez, JI
author2_role author
dc.subject.none.fl_str_mv Optics
Physics, Atomic, Molecular & Chemical
topic Optics
Physics, Atomic, Molecular & Chemical
description We investigated H+ and He+ fragment production from the dissociation of HeH+ ions in collision with a He target. This occurs through either the He++H or the He+H+ channel. We also investigated He2+ and H- production, which are three orders of magnitude smaller than those for H+ and He+. The He+/H channel seems to be favored over the H+/He channel at all acceleration energies as well as at all ion source pressures. The H+ and He+ cross sections appear to be independent of the acceleration energy while they show significant dependence on ion source pressures. The center of mass energy distribution for both H+ and He+ shows a kinetic energy release of near zero eV. Our results suggest that the initial state of the parent HeH+ molecular ions is that of a mixture of ground electronic state as well as metastable excited states with the a (3)Sigma(+) dominant.
publishDate 2002
dc.date.none.fl_str_mv 2002
2011-01-22T10:26:53Z
2011-01-22T10:26:53Z
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv 1050-2947
http://hdl.handle.net/11154/2522
2199
10.1103/PhysRevA.65.052723
identifier_str_mv 1050-2947
2199
10.1103/PhysRevA.65.052723
url http://hdl.handle.net/11154/2522
dc.language.none.fl_str_mv en
language_invalid_str_mv en
dc.relation.none.fl_str_mv Physical Review A
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv 65(5)
reponame:Sistema de Información de la Facultad de Ciencias, UNAM
instname:Universidad Nacional Autónoma de México
instacron:UNAM
instname_str Universidad Nacional Autónoma de México
instacron_str UNAM
institution UNAM
reponame_str Sistema de Información de la Facultad de Ciencias, UNAM
collection Sistema de Información de la Facultad de Ciencias, UNAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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