The ionization probability of N2, O2, and CO2 in intense laser fields is studied theoretically as a function of the alignment angle by solving the time-dependent Schrödinger equation numerically assuming only the single-active-electron approximation. The results are compared to recent experimental data [ D. Pavičić et al. Phys. Rev. Lett. 98 243001 (2007)] and good agreement is found for N2 and O2. For CO2 a possible explanation is provided for the failure of simplified single-active-electron models to reproduce the experimentally observed narrow ionization distribution. It is based on a field-induced coherent core-trapping effect.
Alignment-Dependent Ionization of N2, O2, and CO2 in Intense Laser Fields / Petretti, S.; Vanne, Y. V.; Saenz, A.; Castro, A.; Decleva, Pietro. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 104:(2010), pp. 223001 - 1-223001 - 4. [10.1103/PhysRevLett.104.223001]
Alignment-Dependent Ionization of N2, O2, and CO2 in Intense Laser Fields
DECLEVA, PIETRO
2010-01-01
Abstract
The ionization probability of N2, O2, and CO2 in intense laser fields is studied theoretically as a function of the alignment angle by solving the time-dependent Schrödinger equation numerically assuming only the single-active-electron approximation. The results are compared to recent experimental data [ D. Pavičić et al. Phys. Rev. Lett. 98 243001 (2007)] and good agreement is found for N2 and O2. For CO2 a possible explanation is provided for the failure of simplified single-active-electron models to reproduce the experimentally observed narrow ionization distribution. It is based on a field-induced coherent core-trapping effect.Pubblicazioni consigliate
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