Tunneling ionization of a hydrogen atom in short and ultrashort laser pulses
Journal Article
·
· Journal of Experimental and Theoretical Physics
- Moscow State University, Skobeltsyn Research Institute of Nuclear Physics (Russian Federation)
The ionization of a hydrogen atom in a linearly polarized low-frequency electromagnetic field is investigated by direct numerical integration of the time-dependent Schroedinger equation. The data obtained for various ionization regimes and various initial atomic states are compared with the Keldysh and Perelomov-Popov-Terent'ev (PPT) theories. The validity ranges for the quasi-static model of tunneling ionization and the PPT theory in laser intensity and frequency are determined. The tunneling ionization of the excited 2s and 2p states is discussed. The ionization of a hydrogen atom in an ultrashort (on the order of one optical period) pulse is investigated.
- OSTI ID:
- 21067764
- Journal Information:
- Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 1 Vol. 102; ISSN JTPHES; ISSN 1063-7761
- Country of Publication:
- United States
- Language:
- English
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