Double ionization of helium by 2-keV electrons in equal- and unequal-energy configurations

We present theoretical and experimental fully differential cross sections, in coplanar scattering geometry, for the double ionization of helium by electron impacting at 2 keV. The observed structures for both equal and unequal sharing of the excess energy are analyzed. Although the incident energy c...

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Autores principales: Ambrosio, M.J., Mitnik, D.M., Dorn, A., Ancarani, L.U., Gasaneo, G.
Formato: JOUR
Materias:
Helium
High energy physics
Projectiles
Coplanar scattering geometry
Energy configurations
First Born approximation
Fully differential cross sections
Perturbative treatment
Projectile target interaction
Sturmian functions
Three-body problem
Ionization
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_24699926_v93_n3_p_Ambrosio
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_24699926_v93_n3_p_Ambrosio
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spelling todo:paper_24699926_v93_n3_p_Ambrosio2023-10-03T16:41:30Z Double ionization of helium by 2-keV electrons in equal- and unequal-energy configurations Ambrosio, M.J. Mitnik, D.M. Dorn, A. Ancarani, L.U. Gasaneo, G. Helium High energy physics Projectiles Coplanar scattering geometry Energy configurations First Born approximation Fully differential cross sections Perturbative treatment Projectile target interaction Sturmian functions Three-body problem Ionization We present theoretical and experimental fully differential cross sections, in coplanar scattering geometry, for the double ionization of helium by electron impacting at 2 keV. The observed structures for both equal and unequal sharing of the excess energy are analyzed. Although the incident energy could, in principle, be regarded as high enough for the applicability of the first Born approximation in the projectile-target interaction, the experimental cross sections, measured with a COLTRIMS apparatus, show that further orders' effects can be appreciated. The theoretical cross sections are calculated with the generalized Sturmian functions method, which exactly solves the three-body problem that stems from a first-order projectile-target perturbative treatment. © 2016 American Physical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_24699926_v93_n3_p_Ambrosio
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Helium
High energy physics
Projectiles
Coplanar scattering geometry
Energy configurations
First Born approximation
Fully differential cross sections
Perturbative treatment
Projectile target interaction
Sturmian functions
Three-body problem
Ionization
spellingShingle Helium
High energy physics
Projectiles
Coplanar scattering geometry
Energy configurations
First Born approximation
Fully differential cross sections
Perturbative treatment
Projectile target interaction
Sturmian functions
Three-body problem
Ionization
Ambrosio, M.J.
Mitnik, D.M.
Dorn, A.
Ancarani, L.U.
Gasaneo, G.
Double ionization of helium by 2-keV electrons in equal- and unequal-energy configurations
topic_facet Helium
High energy physics
Projectiles
Coplanar scattering geometry
Energy configurations
First Born approximation
Fully differential cross sections
Perturbative treatment
Projectile target interaction
Sturmian functions
Three-body problem
Ionization
description We present theoretical and experimental fully differential cross sections, in coplanar scattering geometry, for the double ionization of helium by electron impacting at 2 keV. The observed structures for both equal and unequal sharing of the excess energy are analyzed. Although the incident energy could, in principle, be regarded as high enough for the applicability of the first Born approximation in the projectile-target interaction, the experimental cross sections, measured with a COLTRIMS apparatus, show that further orders' effects can be appreciated. The theoretical cross sections are calculated with the generalized Sturmian functions method, which exactly solves the three-body problem that stems from a first-order projectile-target perturbative treatment. © 2016 American Physical Society.
format JOUR
author Ambrosio, M.J.
Mitnik, D.M.
Dorn, A.
Ancarani, L.U.
Gasaneo, G.
author_facet Ambrosio, M.J.
Mitnik, D.M.
Dorn, A.
Ancarani, L.U.
Gasaneo, G.
author_sort Ambrosio, M.J.
title Double ionization of helium by 2-keV electrons in equal- and unequal-energy configurations
title_short Double ionization of helium by 2-keV electrons in equal- and unequal-energy configurations
title_full Double ionization of helium by 2-keV electrons in equal- and unequal-energy configurations
title_fullStr Double ionization of helium by 2-keV electrons in equal- and unequal-energy configurations
title_full_unstemmed Double ionization of helium by 2-keV electrons in equal- and unequal-energy configurations
title_sort double ionization of helium by 2-kev electrons in equal- and unequal-energy configurations
url http://hdl.handle.net/20.500.12110/paper_24699926_v93_n3_p_Ambrosio
work_keys_str_mv AT ambrosiomj doubleionizationofheliumby2kevelectronsinequalandunequalenergyconfigurations
AT mitnikdm doubleionizationofheliumby2kevelectronsinequalandunequalenergyconfigurations
AT dorna doubleionizationofheliumby2kevelectronsinequalandunequalenergyconfigurations
AT ancaranilu doubleionizationofheliumby2kevelectronsinequalandunequalenergyconfigurations
AT gasaneog doubleionizationofheliumby2kevelectronsinequalandunequalenergyconfigurations
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