Ionization of the hydrogen atom by short half-cycle pulses: Dependence on the pulse duration

A theoretical study of the ionization of hydrogen atoms by short external half-cycle pulses (HCPs) as a function of the pulse duration, using different quantum and classical approaches, is presented. Total ionization probability and energy distributions of ejected electrons are calculated in the fra...

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Autores principales: Arbó, Diego Gabriel, Gravielle, Maria Silvia, Miraglia, Jorge Esteban
Publicado: 2010
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346060_v59_n2_p193_Arbo
http://hdl.handle.net/20.500.12110/paper_14346060_v59_n2_p193_Arbo
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_14346060_v59_n2_p193_Arbo2023-06-08T16:15:31Z Ionization of the hydrogen atom by short half-cycle pulses: Dependence on the pulse duration Arbó, Diego Gabriel Gravielle, Maria Silvia Miraglia, Jorge Esteban A theoretical study of the ionization of hydrogen atoms by short external half-cycle pulses (HCPs) as a function of the pulse duration, using different quantum and classical approaches, is presented. Total ionization probability and energy distributions of ejected electrons are calculated in the framework of the singly-distorted Coulomb-Volkov (SDCV) and the doubly-distorted Coulomb-Volkov (DDCV) approximations. We also performed quasiclassical calculations based on a classical trajectory Monte Carlo method which includes the possibility of tunneling (CTMC-T). Quantum and classical results are compared to the numerical solution of the time-dependent Schrödinger equation (TDSE). We find that for high momentum transfers the DDCV shows an improvement compared to the SDCV, especially in the low-energy region of the electron emission spectra, where SDCV fails. In addition, DDCV reproduces successfully the TDSE electron energy distributions at weak momentum transfers. CTMC-T results reveal the importance of tunneling in the ionization process for relative long pulses and strong momentum transfers but fails to overcome the well-known classical suppression observed for weak electric fields. © EDP Sciences, Societá Italiana di Fisica, Springer-Verlag 2010. Fil:Arbó, D.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gravielle, M.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Miraglia, J.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346060_v59_n2_p193_Arbo http://hdl.handle.net/20.500.12110/paper_14346060_v59_n2_p193_Arbo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description A theoretical study of the ionization of hydrogen atoms by short external half-cycle pulses (HCPs) as a function of the pulse duration, using different quantum and classical approaches, is presented. Total ionization probability and energy distributions of ejected electrons are calculated in the framework of the singly-distorted Coulomb-Volkov (SDCV) and the doubly-distorted Coulomb-Volkov (DDCV) approximations. We also performed quasiclassical calculations based on a classical trajectory Monte Carlo method which includes the possibility of tunneling (CTMC-T). Quantum and classical results are compared to the numerical solution of the time-dependent Schrödinger equation (TDSE). We find that for high momentum transfers the DDCV shows an improvement compared to the SDCV, especially in the low-energy region of the electron emission spectra, where SDCV fails. In addition, DDCV reproduces successfully the TDSE electron energy distributions at weak momentum transfers. CTMC-T results reveal the importance of tunneling in the ionization process for relative long pulses and strong momentum transfers but fails to overcome the well-known classical suppression observed for weak electric fields. © EDP Sciences, Societá Italiana di Fisica, Springer-Verlag 2010.
author Arbó, Diego Gabriel
Gravielle, Maria Silvia
Miraglia, Jorge Esteban
spellingShingle Arbó, Diego Gabriel
Gravielle, Maria Silvia
Miraglia, Jorge Esteban
Ionization of the hydrogen atom by short half-cycle pulses: Dependence on the pulse duration
author_facet Arbó, Diego Gabriel
Gravielle, Maria Silvia
Miraglia, Jorge Esteban
author_sort Arbó, Diego Gabriel
title Ionization of the hydrogen atom by short half-cycle pulses: Dependence on the pulse duration
title_short Ionization of the hydrogen atom by short half-cycle pulses: Dependence on the pulse duration
title_full Ionization of the hydrogen atom by short half-cycle pulses: Dependence on the pulse duration
title_fullStr Ionization of the hydrogen atom by short half-cycle pulses: Dependence on the pulse duration
title_full_unstemmed Ionization of the hydrogen atom by short half-cycle pulses: Dependence on the pulse duration
title_sort ionization of the hydrogen atom by short half-cycle pulses: dependence on the pulse duration
publishDate 2010
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346060_v59_n2_p193_Arbo
http://hdl.handle.net/20.500.12110/paper_14346060_v59_n2_p193_Arbo
work_keys_str_mv AT arbodiegogabriel ionizationofthehydrogenatombyshorthalfcyclepulsesdependenceonthepulseduration
AT graviellemariasilvia ionizationofthehydrogenatombyshorthalfcyclepulsesdependenceonthepulseduration
AT miragliajorgeesteban ionizationofthehydrogenatombyshorthalfcyclepulsesdependenceonthepulseduration
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