Vortices in the three-body electron-positron-proton continuum system induced by the positron-impact ionization of hydrogen

Autores
Navarrete, Francisco Oscar; Barrachina Tejada, Raul Oscar
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
By means of a systematic theoretical study of the transition matrix element T for the ${{e}^{+}}+{\rm H}$ ionization collisions in a collinear geometry, we uncover the presence of three isolated zeros at intermediate impact energies. We demonstrate that these zeros actually represent vortices in the generalized velocity field associated to T. One of these vortices is shown to be related to a deep minimum observed more than two decades ago by Brauner and Briggs in 1991 at extremely large impact energies, where the corresponding fully differential cross section was too small to be experimentally accessible. Here we elucidate that it might still be present at much smaller impact energies, thus being amenable to experimental investigation. Furthermore, we discovered that this vortex is paired with a second one of opposite circulation, in accordance with one of the scenarios for their emergence. We study the location of these vortices and find that they seem to be located at, emerge from, or move towards specific points which could be related to particular collision mechanisms, as the direct ionization and capture to the continuum cusps, or the saddle-point and Thomas processes.
Fil: Navarrete, Francisco Oscar. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro | Universidad Nacional de Cuyo. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Barrachina Tejada, Raul Oscar. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro | Universidad Nacional de Cuyo. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Materia
BOHM
BRAUNER
BRIGGS
HYDROGEN
IONIZATION
POSITRON
VORTICES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/127072
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Vortices in the three-body electron-positron-proton continuum system induced by the positron-impact ionization of hydrogenNavarrete, Francisco OscarBarrachina Tejada, Raul OscarBOHMBRAUNERBRIGGSHYDROGENIONIZATIONPOSITRONVORTICEShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1By means of a systematic theoretical study of the transition matrix element T for the ${{e}^{+}}+{\rm H}$ ionization collisions in a collinear geometry, we uncover the presence of three isolated zeros at intermediate impact energies. We demonstrate that these zeros actually represent vortices in the generalized velocity field associated to T. One of these vortices is shown to be related to a deep minimum observed more than two decades ago by Brauner and Briggs in 1991 at extremely large impact energies, where the corresponding fully differential cross section was too small to be experimentally accessible. Here we elucidate that it might still be present at much smaller impact energies, thus being amenable to experimental investigation. Furthermore, we discovered that this vortex is paired with a second one of opposite circulation, in accordance with one of the scenarios for their emergence. We study the location of these vortices and find that they seem to be located at, emerge from, or move towards specific points which could be related to particular collision mechanisms, as the direct ionization and capture to the continuum cusps, or the saddle-point and Thomas processes.Fil: Navarrete, Francisco Oscar. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro | Universidad Nacional de Cuyo. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Barrachina Tejada, Raul Oscar. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro | Universidad Nacional de Cuyo. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaIOP Publishing2015-01-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/127072Navarrete, Francisco Oscar; Barrachina Tejada, Raul Oscar; Vortices in the three-body electron-positron-proton continuum system induced by the positron-impact ionization of hydrogen; IOP Publishing; Journal of Physics B: Atomic, Molecular and Optical Physics; 48; 5; 30-1-2015; 1-60953-40751361-6455CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/0953-4075/48/5/055201info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/0953-4075/48/5/055201info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:01:59Zoai:ri.conicet.gov.ar:11336/127072instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:01:59.79CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Vortices in the three-body electron-positron-proton continuum system induced by the positron-impact ionization of hydrogen
title Vortices in the three-body electron-positron-proton continuum system induced by the positron-impact ionization of hydrogen
spellingShingle Vortices in the three-body electron-positron-proton continuum system induced by the positron-impact ionization of hydrogen
Navarrete, Francisco Oscar
BOHM
BRAUNER
BRIGGS
HYDROGEN
IONIZATION
POSITRON
VORTICES
title_short Vortices in the three-body electron-positron-proton continuum system induced by the positron-impact ionization of hydrogen
title_full Vortices in the three-body electron-positron-proton continuum system induced by the positron-impact ionization of hydrogen
title_fullStr Vortices in the three-body electron-positron-proton continuum system induced by the positron-impact ionization of hydrogen
title_full_unstemmed Vortices in the three-body electron-positron-proton continuum system induced by the positron-impact ionization of hydrogen
title_sort Vortices in the three-body electron-positron-proton continuum system induced by the positron-impact ionization of hydrogen
dc.creator.none.fl_str_mv Navarrete, Francisco Oscar
Barrachina Tejada, Raul Oscar
author Navarrete, Francisco Oscar
author_facet Navarrete, Francisco Oscar
Barrachina Tejada, Raul Oscar
author_role author
author2 Barrachina Tejada, Raul Oscar
author2_role author
dc.subject.none.fl_str_mv BOHM
BRAUNER
BRIGGS
HYDROGEN
IONIZATION
POSITRON
VORTICES
topic BOHM
BRAUNER
BRIGGS
HYDROGEN
IONIZATION
POSITRON
VORTICES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv By means of a systematic theoretical study of the transition matrix element T for the ${{e}^{+}}+{\rm H}$ ionization collisions in a collinear geometry, we uncover the presence of three isolated zeros at intermediate impact energies. We demonstrate that these zeros actually represent vortices in the generalized velocity field associated to T. One of these vortices is shown to be related to a deep minimum observed more than two decades ago by Brauner and Briggs in 1991 at extremely large impact energies, where the corresponding fully differential cross section was too small to be experimentally accessible. Here we elucidate that it might still be present at much smaller impact energies, thus being amenable to experimental investigation. Furthermore, we discovered that this vortex is paired with a second one of opposite circulation, in accordance with one of the scenarios for their emergence. We study the location of these vortices and find that they seem to be located at, emerge from, or move towards specific points which could be related to particular collision mechanisms, as the direct ionization and capture to the continuum cusps, or the saddle-point and Thomas processes.
Fil: Navarrete, Francisco Oscar. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro | Universidad Nacional de Cuyo. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Barrachina Tejada, Raul Oscar. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro | Universidad Nacional de Cuyo. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
description By means of a systematic theoretical study of the transition matrix element T for the ${{e}^{+}}+{\rm H}$ ionization collisions in a collinear geometry, we uncover the presence of three isolated zeros at intermediate impact energies. We demonstrate that these zeros actually represent vortices in the generalized velocity field associated to T. One of these vortices is shown to be related to a deep minimum observed more than two decades ago by Brauner and Briggs in 1991 at extremely large impact energies, where the corresponding fully differential cross section was too small to be experimentally accessible. Here we elucidate that it might still be present at much smaller impact energies, thus being amenable to experimental investigation. Furthermore, we discovered that this vortex is paired with a second one of opposite circulation, in accordance with one of the scenarios for their emergence. We study the location of these vortices and find that they seem to be located at, emerge from, or move towards specific points which could be related to particular collision mechanisms, as the direct ionization and capture to the continuum cusps, or the saddle-point and Thomas processes.
publishDate 2015
dc.date.none.fl_str_mv 2015-01-30
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/127072
Navarrete, Francisco Oscar; Barrachina Tejada, Raul Oscar; Vortices in the three-body electron-positron-proton continuum system induced by the positron-impact ionization of hydrogen; IOP Publishing; Journal of Physics B: Atomic, Molecular and Optical Physics; 48; 5; 30-1-2015; 1-6
0953-4075
1361-6455
CONICET Digital
CONICET
url http://hdl.handle.net/11336/127072
identifier_str_mv Navarrete, Francisco Oscar; Barrachina Tejada, Raul Oscar; Vortices in the three-body electron-positron-proton continuum system induced by the positron-impact ionization of hydrogen; IOP Publishing; Journal of Physics B: Atomic, Molecular and Optical Physics; 48; 5; 30-1-2015; 1-6
0953-4075
1361-6455
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-4075/48/5/055201
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/0953-4075/48/5/055201
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842269729507508224
score 13.13397

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