Semiclassical two-step model for strong-field ionization
We present a semiclassical two-step model for strong-field ionization that accounts for path interferences of tunnel-ionized electrons in the ionic potential beyond perturbation theory. Within the framework of a classical trajectory Monte Carlo representation of the phase-space dynamics, the model e...
Guardado en:
| Publicado: |
2016
|
|---|---|
| Materias: | |
| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24699926_v94_n1_p_ShvetsovShilovski http://hdl.handle.net/20.500.12110/paper_24699926_v94_n1_p_ShvetsovShilovski |
| Aporte de: |
| id |
paper:paper_24699926_v94_n1_p_ShvetsovShilovski |
|---|---|
| record_format |
dspace |
| spelling |
paper:paper_24699926_v94_n1_p_ShvetsovShilovski2023-06-08T16:36:01Z Semiclassical two-step model for strong-field ionization Angular distribution Ionization potential Momentum Perturbation techniques Phase space methods Photoelectron spectroscopy Photoelectrons Photons Quantum chemistry Classical trajectory monte carlo Exact numerical solutions Interference patterns Momentum distributions Photoelectron angular distributions Quantitative agreement Semi-classical approximation Strong field ionization Ionization We present a semiclassical two-step model for strong-field ionization that accounts for path interferences of tunnel-ionized electrons in the ionic potential beyond perturbation theory. Within the framework of a classical trajectory Monte Carlo representation of the phase-space dynamics, the model employs the semiclassical approximation to the phase of the full quantum propagator in the exit channel. By comparison with the exact numerical solution of the time-dependent Schrödinger equation for strong-field ionization of hydrogen, we show that for suitable choices of the momentum distribution after the first tunneling step, the model yields good quantitative agreement with the full quantum simulation. The two-dimensional photoelectron momentum distributions, the energy spectra, and the angular distributions are found to be in good agreement with the corresponding quantum results. Specifically, the model quantitatively reproduces the fanlike interference patterns in the low-energy part of the two-dimensional momentum distributions, as well as the modulations in the photoelectron angular distributions. © 2016 American Physical Society. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24699926_v94_n1_p_ShvetsovShilovski http://hdl.handle.net/20.500.12110/paper_24699926_v94_n1_p_ShvetsovShilovski |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Angular distribution Ionization potential Momentum Perturbation techniques Phase space methods Photoelectron spectroscopy Photoelectrons Photons Quantum chemistry Classical trajectory monte carlo Exact numerical solutions Interference patterns Momentum distributions Photoelectron angular distributions Quantitative agreement Semi-classical approximation Strong field ionization Ionization |
| spellingShingle |
Angular distribution Ionization potential Momentum Perturbation techniques Phase space methods Photoelectron spectroscopy Photoelectrons Photons Quantum chemistry Classical trajectory monte carlo Exact numerical solutions Interference patterns Momentum distributions Photoelectron angular distributions Quantitative agreement Semi-classical approximation Strong field ionization Ionization Semiclassical two-step model for strong-field ionization |
| topic_facet |
Angular distribution Ionization potential Momentum Perturbation techniques Phase space methods Photoelectron spectroscopy Photoelectrons Photons Quantum chemistry Classical trajectory monte carlo Exact numerical solutions Interference patterns Momentum distributions Photoelectron angular distributions Quantitative agreement Semi-classical approximation Strong field ionization Ionization |
| description |
We present a semiclassical two-step model for strong-field ionization that accounts for path interferences of tunnel-ionized electrons in the ionic potential beyond perturbation theory. Within the framework of a classical trajectory Monte Carlo representation of the phase-space dynamics, the model employs the semiclassical approximation to the phase of the full quantum propagator in the exit channel. By comparison with the exact numerical solution of the time-dependent Schrödinger equation for strong-field ionization of hydrogen, we show that for suitable choices of the momentum distribution after the first tunneling step, the model yields good quantitative agreement with the full quantum simulation. The two-dimensional photoelectron momentum distributions, the energy spectra, and the angular distributions are found to be in good agreement with the corresponding quantum results. Specifically, the model quantitatively reproduces the fanlike interference patterns in the low-energy part of the two-dimensional momentum distributions, as well as the modulations in the photoelectron angular distributions. © 2016 American Physical Society. |
| title |
Semiclassical two-step model for strong-field ionization |
| title_short |
Semiclassical two-step model for strong-field ionization |
| title_full |
Semiclassical two-step model for strong-field ionization |
| title_fullStr |
Semiclassical two-step model for strong-field ionization |
| title_full_unstemmed |
Semiclassical two-step model for strong-field ionization |
| title_sort |
semiclassical two-step model for strong-field ionization |
| publishDate |
2016 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24699926_v94_n1_p_ShvetsovShilovski http://hdl.handle.net/20.500.12110/paper_24699926_v94_n1_p_ShvetsovShilovski |
| _version_ |
1768542620091416576 |