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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2016
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24699926_v93_n3_p_Ambrosio http://hdl.handle.net/20.500.12110/paper_24699926_v93_n3_p_Ambrosio |
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paper:paper_24699926_v93_n3_p_Ambrosio2023-06-08T16:36:00Z Double ionization of helium by 2-keV electrons in equal- and unequal-energy configurations 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. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24699926_v93_n3_p_Ambrosio 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 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. |
| 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 |
| publishDate |
2016 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24699926_v93_n3_p_Ambrosio http://hdl.handle.net/20.500.12110/paper_24699926_v93_n3_p_Ambrosio |
| _version_ |
1768544106866278400 |