The ionization of one-electron diatomic molecules in strong and short laser fields

被引：25

作者：

Barmaki, S

Laulan, S

Bachau, H

Ghalim, M

机构：

[1] Univ Bordeaux 1, CNRS, UMR 5107, Ctr Lasers Intenses & Applicat, F-33405 Talence, France

[2] Univ Hassan 2, Lab Phys Atom & Mol, Fac Sci, Casablanca, Morocco

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2003年 / 36卷 / 05期

关键词：

D O I：

10.1088/0953-4075/36/5/303

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The dynamics of multiphoton processes with strong fields and short pulses in one-electron diatomic molecules is investigated, solving the time dependent Schrodinger equation. We propose a spectral type method, which uses L2 functions and prolate spheroidal coordinates. The approach is applied to the cases of two- and three-photon ionization of H(2)+, with a photon energy of 0.6 au and parallel polarization. In the three-photon ionization case, above threshold ionization occurs. We investigate, in particular, the limit of perturbation theory, and the photoelectron spectrum is calculated for the different open channels. The case of perpendicular polarization, where one-photon absorption is important, is investigated. Finally, we determine the final vibrational states of the nuclei for the case of two-photon ionization.

引用

页码：817 / 824

页数：8

共 12 条

[1] First observation of self-amplified spontaneous emission in a free-electron laser at 109 nm wavelength [J].

Andruszkow, J ;

Aune, B ;

Ayvazyan, V ;

Baboi, N ;

Bakker, R ;

Balakin, V ;

Barni, D ;

Bazhan, A ;

Bernard, M ;

Bosotti, A ;

Bourdon, JC ;

Brefeld, W ;

Brinkmann, R ;

Buhler, S ;

Carneiro, JP ;

Castellano, M ;

Castro, P ;

Catani, L ;

Chel, S ;

Cho, Y ;

Choroba, S ;

Colby, ER ;

Decking, W ;

Den Hartog, P ;

Desmons, M ;

Dohlus, M ;

Edwards, D ;

Edwards, HT ;

Faatz, B ;

Feldhaus, J ;

Ferrario, M ;

Fitch, MJ ;

Flöttmann, K ;

Fouaidy, M ;

Gamp, A ;

Garvey, T ;

Gerth, C ;

Geitz, M ;

Gluskin, E ;

Gretchko, V ;

Hahn, U ;

Hartung, WH ;

Hubert, D ;

Hüning, M ;

Ischebek, R ;

Jablonka, M ;

Joly, JM ;

Juillard, M ;

Junquera, T ;

Jurkiewicz, P .

PHYSICAL REVIEW LETTERS, 2000, 85 (18) :3825-3829

[2] Effect of vibration and internuclear axis orientation on multiphoton ionization of H2+ [J].

Apalategui, A ;

Saenz, A ;

Lambropoulos, P .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2000, 33 (14) :2791-2807

[3] Multiphoton ionization of the hydrogen molecule H2 [J].

Apalategui, A ;

Saenz, A .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2002, 35 (08) :1909-1928

[4] Applications of B-splines in atomic and molecular physics [J].

Bachau, H ;

Cormier, E ;

Decleva, P ;

Hansen, JE ;

Martín, F .

REPORTS ON PROGRESS IN PHYSICS, 2001, 64 (12) :1815-1943

[5] Multiphoton ionization of one-electron diatomic molecules: the discretization approach for the two-centre problem [J].

Bachau, H .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2002, 35 (03) :509-521

[6] Multiphoton ionization of H-2(+) [J].

Baik, MG ;

Pont, M ;

Shakeshaft, R .

PHYSICAL REVIEW A, 1996, 54 (02) :1570-1576

[7] IONIZATION RATES OF H-2(+) IN AN INTENSE LASER FIELD BY NUMERICAL-INTEGRATION OF THE TIME-DEPENDENT SCHRODINGER-EQUATION [J].

CHELKOWSKI, S ;

ZUO, T ;

BANDRAUK, AD .

PHYSICAL REVIEW A, 1992, 46 (09) :R5342-R5345

[8]

de Boor C., 1978, PRACTICAL GUIDE SPLI, DOI DOI 10.1007/978-1-4612-6333-3

[9] A PRACTICAL SOLUTION TO THE UNKNOWN NORMALIZATION PROBLEM [J].

MACIAS, A ;

MARTIN, F ;

RIERA, A ;

YANEZ, M .

INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY, 1988, 33 (04) :279-300

[10]

MIES FH, 1993, NATO ADV SCI INST SE, V316, P329

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