Double ionization of helium by fast electrons with the Generalized Sturmian Functions method

The double ionization of helium by high energy electron impact is studied. The corresponding four-body Schrödinger equation is transformed into a set of driven equations containing successive orders in the projectile–target interaction. The first order driven equation is solved with a generalized St...

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Detalles Bibliográficos
Autores: Ambrosio, Marcelo José, Colavecchia, Flavio Dario, Gasaneo, Gustavo, Mitnik, Dario Marcelo, Ancarani, L. U.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/16700
Acceso en línea:http://hdl.handle.net/11336/16700
Access Level:acceso abierto
Palabra clave:Helium
Double Ionization
Fully Differential Cross Section
First Born Approximation
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
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dc.title.none.fl_str_mv Double ionization of helium by fast electrons with the Generalized Sturmian Functions method
title Double ionization of helium by fast electrons with the Generalized Sturmian Functions method
spellingShingle Double ionization of helium by fast electrons with the Generalized Sturmian Functions method
Ambrosio, Marcelo José
Helium
Double Ionization
Fully Differential Cross Section
First Born Approximation
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
title_short Double ionization of helium by fast electrons with the Generalized Sturmian Functions method
title_full Double ionization of helium by fast electrons with the Generalized Sturmian Functions method
title_fullStr Double ionization of helium by fast electrons with the Generalized Sturmian Functions method
title_full_unstemmed Double ionization of helium by fast electrons with the Generalized Sturmian Functions method
title_sort Double ionization of helium by fast electrons with the Generalized Sturmian Functions method
dc.creator.none.fl_str_mv Ambrosio, Marcelo José
Colavecchia, Flavio Dario
Gasaneo, Gustavo
Mitnik, Dario Marcelo
Ancarani, L. U.
author Ambrosio, Marcelo José
author_facet Ambrosio, Marcelo José
Colavecchia, Flavio Dario
Gasaneo, Gustavo
Mitnik, Dario Marcelo
Ancarani, L. U.
author_role author
author2 Colavecchia, Flavio Dario
Gasaneo, Gustavo
Mitnik, Dario Marcelo
Ancarani, L. U.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Helium
Double Ionization
Fully Differential Cross Section
First Born Approximation
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
topic Helium
Double Ionization
Fully Differential Cross Section
First Born Approximation
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
description The double ionization of helium by high energy electron impact is studied. The corresponding four-body Schrödinger equation is transformed into a set of driven equations containing successive orders in the projectile–target interaction. The first order driven equation is solved with a generalized Sturmian functions approach. The transition amplitude, extracted from the asymptotic limit of the first order solution, is equivalent to the familiar first Born approximation. Fivefold differential cross sections are calculated for (e, 3e) processes within the high incident energy and small momentum transfer regimes. The results are compared with other numerical methods, and with the only absolute experimental data available. Our cross sections agree in shape and magnitude with those of the convergent close coupling method for the (10+10) eV and (4+4) eV emission energies. To date this had not been achieved by any two different numerical schemes when solving the three–body continuum problem for the fast projectile (e, 3e) process. Though agreement with the experimental data, in particular with respect to the magnitude, is not achieved, our findings partly clarify a long standing puzzle.
publishDate 2015
dc.date.none.fl_str_mv 2015-02
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/11336/16700
Ambrosio, Marcelo José; Colavecchia, Flavio Dario; Gasaneo, Gustavo; Mitnik, Dario Marcelo; Ancarani, L. U.; Double ionization of helium by fast electrons with the Generalized Sturmian Functions method; Iop Publishing; Journal Of Physics B: Atomic, Molecular And Optical Physics; 48; 2-2015; 55204, 1-13
0953-4075
url http://hdl.handle.net/11336/16700
identifier_str_mv Ambrosio, Marcelo José; Colavecchia, Flavio Dario; Gasaneo, Gustavo; Mitnik, Dario Marcelo; Ancarani, L. U.; Double ionization of helium by fast electrons with the Generalized Sturmian Functions method; Iop Publishing; Journal Of Physics B: Atomic, Molecular And Optical Physics; 48; 2-2015; 55204, 1-13
0953-4075
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/0953-4075/48/5/055204/
info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-4075/48/5/055204
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
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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
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spelling Double ionization of helium by fast electrons with the Generalized Sturmian Functions methodAmbrosio, Marcelo JoséColavecchia, Flavio DarioGasaneo, GustavoMitnik, Dario MarceloAncarani, L. U.HeliumDouble IonizationFully Differential Cross SectionFirst Born Approximationhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The double ionization of helium by high energy electron impact is studied. The corresponding four-body Schrödinger equation is transformed into a set of driven equations containing successive orders in the projectile–target interaction. The first order driven equation is solved with a generalized Sturmian functions approach. The transition amplitude, extracted from the asymptotic limit of the first order solution, is equivalent to the familiar first Born approximation. Fivefold differential cross sections are calculated for (e, 3e) processes within the high incident energy and small momentum transfer regimes. The results are compared with other numerical methods, and with the only absolute experimental data available. Our cross sections agree in shape and magnitude with those of the convergent close coupling method for the (10+10) eV and (4+4) eV emission energies. To date this had not been achieved by any two different numerical schemes when solving the three–body continuum problem for the fast projectile (e, 3e) process. Though agreement with the experimental data, in particular with respect to the magnitude, is not achieved, our findings partly clarify a long standing puzzle.Fil: Ambrosio, Marcelo José. Universidad Nacional del Sur. Departamento de Física; Argentina. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Colavecchia, Flavio Dario. Comisión Nacional de Energíâ­a Atómica. Gerencia del Area Investigación y Aplicaciones No Nucleares. Gerencia de Física (centro Atómico Balseiro). División Colisiones Atómicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gasaneo, Gustavo. Universidad Nacional del Sur; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Mitnik, Dario Marcelo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Ancarani, L. U.. Universite Paul Verlaine-metz. Institut de Physique, Chimie Et Materiaux. Laboratorie de Physique Moleculaire Et Des Collisions; Francia. Universite de Lorraine; FranciaIop Publishing2015-02info: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/11336/16700Ambrosio, Marcelo José; Colavecchia, Flavio Dario; Gasaneo, Gustavo; Mitnik, Dario Marcelo; Ancarani, L. U.; Double ionization of helium by fast electrons with the Generalized Sturmian Functions method; Iop Publishing; Journal Of Physics B: Atomic, Molecular And Optical Physics; 48; 2-2015; 55204, 1-130953-4075enginfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/0953-4075/48/5/055204/info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-4075/48/5/055204info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:43:25Zoai:ri.conicet.gov.ar:11336/16700instacron: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:34982024-05-08 13:43:25.279CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
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