Electron angular distributions in double photoionization: Use of effective Sommerfeld parameters

We present calculations of the fivefold differential cross-section (FDCS) for double photoionization of helium at excess energies of 6 and 20 eV above threshold. Our results are obtained using for the final double-continuum state a product of three Coulomb wave functions, with the Sommerfeld paramet...

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Detalles Bibliográficos
Autor principal: Kornberg, Mariano Alberto
Publicado: 1999
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346060_v5_n2_p221_Kornberg
http://hdl.handle.net/20.500.12110/paper_14346060_v5_n2_p221_Kornberg
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_14346060_v5_n2_p221_Kornberg
record_format dspace
spelling paper:paper_14346060_v5_n2_p221_Kornberg2023-06-08T16:15:31Z Electron angular distributions in double photoionization: Use of effective Sommerfeld parameters Kornberg, Mariano Alberto We present calculations of the fivefold differential cross-section (FDCS) for double photoionization of helium at excess energies of 6 and 20 eV above threshold. Our results are obtained using for the final double-continuum state a product of three Coulomb wave functions, with the Sommerfeld parameters modified to describe the strength of interaction of any two particles affected by the third particle. Our calculations are compared with recent absolute measurements by Dörner et al. (Phys. Rev. A 57, 1074 (1998)), both in coplanar and non-coplanar geometries. Very good agreement is obtained for the shape of the angular distributions, and differences in the absolute magnitude exist in comparison with the standard choice of Sommerfeld parameters. Fil:Kornberg, M.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1999 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346060_v5_n2_p221_Kornberg http://hdl.handle.net/20.500.12110/paper_14346060_v5_n2_p221_Kornberg
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We present calculations of the fivefold differential cross-section (FDCS) for double photoionization of helium at excess energies of 6 and 20 eV above threshold. Our results are obtained using for the final double-continuum state a product of three Coulomb wave functions, with the Sommerfeld parameters modified to describe the strength of interaction of any two particles affected by the third particle. Our calculations are compared with recent absolute measurements by Dörner et al. (Phys. Rev. A 57, 1074 (1998)), both in coplanar and non-coplanar geometries. Very good agreement is obtained for the shape of the angular distributions, and differences in the absolute magnitude exist in comparison with the standard choice of Sommerfeld parameters.
author Kornberg, Mariano Alberto
spellingShingle Kornberg, Mariano Alberto
Electron angular distributions in double photoionization: Use of effective Sommerfeld parameters
author_facet Kornberg, Mariano Alberto
author_sort Kornberg, Mariano Alberto
title Electron angular distributions in double photoionization: Use of effective Sommerfeld parameters
title_short Electron angular distributions in double photoionization: Use of effective Sommerfeld parameters
title_full Electron angular distributions in double photoionization: Use of effective Sommerfeld parameters
title_fullStr Electron angular distributions in double photoionization: Use of effective Sommerfeld parameters
title_full_unstemmed Electron angular distributions in double photoionization: Use of effective Sommerfeld parameters
title_sort electron angular distributions in double photoionization: use of effective sommerfeld parameters
publishDate 1999
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346060_v5_n2_p221_Kornberg
http://hdl.handle.net/20.500.12110/paper_14346060_v5_n2_p221_Kornberg
work_keys_str_mv AT kornbergmarianoalberto electronangulardistributionsindoublephotoionizationuseofeffectivesommerfeldparameters
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