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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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_14346060_v59_n2_p193_Arbo |
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todo:paper_14346060_v59_n2_p193_Arbo2023-10-03T16:15:42Z Ionization of the hydrogen atom by short half-cycle pulses: Dependence on the pulse duration Arbó, D.G. Gravielle, M.S. Dimitriou, K.I. Tókési, K. Borbély, S. Miraglia, J.E. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_14346060_v59_n2_p193_Arbo |
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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. |
| format |
JOUR |
| author |
Arbó, D.G. Gravielle, M.S. Dimitriou, K.I. Tókési, K. Borbély, S. Miraglia, J.E. |
| spellingShingle |
Arbó, D.G. Gravielle, M.S. Dimitriou, K.I. Tókési, K. Borbély, S. Miraglia, J.E. Ionization of the hydrogen atom by short half-cycle pulses: Dependence on the pulse duration |
| author_facet |
Arbó, D.G. Gravielle, M.S. Dimitriou, K.I. Tókési, K. Borbély, S. Miraglia, J.E. |
| author_sort |
Arbó, D.G. |
| 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 |
| url |
http://hdl.handle.net/20.500.12110/paper_14346060_v59_n2_p193_Arbo |
| work_keys_str_mv |
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| _version_ |
1782030996509556736 |