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IONIZATION OF A 1-D MODEL OF H2 + FROM DIFFERENT STATES IN INTENSE LASER FIELD* | ||
| Iranian Journal of Science | ||
| مقاله 9، دوره 33، شماره 1، اردیبهشت 2009، صفحه 87-102 اصل مقاله (1.16 M) | ||
| نوع مقاله: Regular Paper | ||
| شناسه دیجیتال (DOI): 10.22099/ijsts.2009.2205 | ||
| نویسندگان | ||
| H. SABZYAN* ؛ H. EBADI | ||
| Department of Chemistry, University of Isfahan, Isfahan 81746-73441, I. R. Iran | ||
| چکیده | ||
| Time-dependent Schrödinger equation for a 1-D model of hydrogen molecular ion H2 + in intense laser field linearly polarized along the molecular axis is solved. Ionization rates are calculated for different initial states. The evolution of electronic wavefunction at fixed inter-nuclear separations are simulated and analyzed. The results obtained for the ground state of this 1-D model of H2 + show appreciable qualitative agreement with the results obtained previously in the 2-D and 3-D studies. The Ponderomotive energy effect on the beginning of ionization in different initial states is observed. The above threshold ionization has a large contribution in the ionization of electrons, except for the ground state and at equilibrium inter-nuclear separation. The ionization rates show that at some inter-nuclear separations larger than 4.0 au, resonance enhancement ionization by some higher excited states occur. At inter-nuclear separations shorter than 4.0 au, the ground state does not show any resonance with higher excited states. | ||
| کلیدواژهها | ||
| Intense laser؛ TDSE؛ above threshold, ionization rate؛ H2+؛ Ponderomotive؛ wavepacket؛ 1-D model | ||
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