Benchmark for two-photon ionization of atoms with generalized Sturmian functions

Abstract: The description with traditional methods of the single or multiple ionization of atomsand molecules by two or more successive photons requires some special treatment.Difficulties occur when a spatially non-decaying driven term appears in theSchrödinger-like non-homogeneous equation for the...

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Detalles Bibliográficos
Autores principales:	Gómez, A.I., Gasaneo, G., Mitnik, D.M., Ambrosio, M.J., Ancarani, L.U.
Formato:	JOUR
Materias:	Atomic and Molecular Collisions
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_14346060_v70_n10_p_Gomez
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_14346060_v70_n10_p_Gomez
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spelling	todo:paper_14346060_v70_n10_p_Gomez2023-10-03T16:15:46Z Benchmark for two-photon ionization of atoms with generalized Sturmian functions Gómez, A.I. Gasaneo, G. Mitnik, D.M. Ambrosio, M.J. Ancarani, L.U. Atomic and Molecular Collisions Abstract: The description with traditional methods of the single or multiple ionization of atomsand molecules by two or more successive photons requires some special treatment.Difficulties occur when a spatially non-decaying driven term appears in theSchrödinger-like non-homogeneous equation for the scattering wave function. We proposeusing the intrinsic physical and mathematical properties of generalized Sturmian functionsto efficiently deal with the Dalgarno-Lewis second order equation. In contrast to otherapproaches, our methodology provides a practical way to extract the transition amplitudefrom the asymptotic behavior of the scattering wave function, and this without requiringany further projection onto some final approximate state. As an illustration, the hydrogencase is studied in details, for both pulsed and monochrome laser radiation fields. Thesuccessful comparison with analytical and time-dependent solutions provides a benchmark,and allows us to master the numerical aspects of the methodology. Appropriately chosengeneralized Sturmian functions manage to easily reproduce the beat-type asymptoticbehavior observed in the photoelectron wave function after absorption by the atom of twosuccessive photons. Graphical abstract: [Figure not available: see fulltext.] © 2016, EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_14346060_v70_n10_p_Gomez
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Atomic and Molecular Collisions
spellingShingle	Atomic and Molecular Collisions Gómez, A.I. Gasaneo, G. Mitnik, D.M. Ambrosio, M.J. Ancarani, L.U. Benchmark for two-photon ionization of atoms with generalized Sturmian functions
topic_facet	Atomic and Molecular Collisions
description	Abstract: The description with traditional methods of the single or multiple ionization of atomsand molecules by two or more successive photons requires some special treatment.Difficulties occur when a spatially non-decaying driven term appears in theSchrödinger-like non-homogeneous equation for the scattering wave function. We proposeusing the intrinsic physical and mathematical properties of generalized Sturmian functionsto efficiently deal with the Dalgarno-Lewis second order equation. In contrast to otherapproaches, our methodology provides a practical way to extract the transition amplitudefrom the asymptotic behavior of the scattering wave function, and this without requiringany further projection onto some final approximate state. As an illustration, the hydrogencase is studied in details, for both pulsed and monochrome laser radiation fields. Thesuccessful comparison with analytical and time-dependent solutions provides a benchmark,and allows us to master the numerical aspects of the methodology. Appropriately chosengeneralized Sturmian functions manage to easily reproduce the beat-type asymptoticbehavior observed in the photoelectron wave function after absorption by the atom of twosuccessive photons. Graphical abstract: [Figure not available: see fulltext.] © 2016, EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg.
format	JOUR
author	Gómez, A.I. Gasaneo, G. Mitnik, D.M. Ambrosio, M.J. Ancarani, L.U.
author_facet	Gómez, A.I. Gasaneo, G. Mitnik, D.M. Ambrosio, M.J. Ancarani, L.U.
author_sort	Gómez, A.I.
title	Benchmark for two-photon ionization of atoms with generalized Sturmian functions
title_short	Benchmark for two-photon ionization of atoms with generalized Sturmian functions
title_full	Benchmark for two-photon ionization of atoms with generalized Sturmian functions
title_fullStr	Benchmark for two-photon ionization of atoms with generalized Sturmian functions
title_full_unstemmed	Benchmark for two-photon ionization of atoms with generalized Sturmian functions
title_sort	benchmark for two-photon ionization of atoms with generalized sturmian functions
url	http://hdl.handle.net/20.500.12110/paper_14346060_v70_n10_p_Gomez
work_keys_str_mv	AT gomezai benchmarkfortwophotonionizationofatomswithgeneralizedsturmianfunctions AT gasaneog benchmarkfortwophotonionizationofatomswithgeneralizedsturmianfunctions AT mitnikdm benchmarkfortwophotonionizationofatomswithgeneralizedsturmianfunctions AT ambrosiomj benchmarkfortwophotonionizationofatomswithgeneralizedsturmianfunctions AT ancaranilu benchmarkfortwophotonionizationofatomswithgeneralizedsturmianfunctions
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Benchmark for two-photon ionization of atoms with generalized Sturmian functions

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