Correlation effects in two-photon single and double ionization of helium

被引：144

作者：

Laulan, S ^{[1
]}

Bachau, H ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW A | 2003年 / 68卷 / 01期

关键词：

D O I：

10.1103/PhysRevA.68.013409

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the effects of two-photon absorption in the region of the double continuum of helium, with extreme ultraviolet (xuv) laser fields. The nonrelativistic time-dependent Schrodinger equation is solved for the two active electron systems, interacting with strong laser pulses. The dynamic calculations include electronic correlations. The final double continuum states are calculated by treating the electronic term 1/r(12) within the zero- and first-order perturbation theory. We calculate the total single and double ionization probabilities and cross sections for photon energies of 45 and 57 eV, as well as the electron energy distributions in the double continuum. The effects of electronic correlations are discussed in the context of ultrashort pulses.

引用

页数：6

共 18 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] Generation of GW radiation pulses from a VUV free-electron laser operating in the femtosecond regime -: art. no. 104802 [J].

Ayvazyan, V ;

Baboi, N ;

Bohnet, I ;

Brinkmann, R ;

Castellano, M ;

Castro, P ;

Catani, L ;

Choroba, S ;

Cianchi, A ;

Dohlus, M ;

Edwards, HT ;

Faatz, B ;

Fateev, AA ;

Feldhaus, J ;

Flöttmann, K ;

Gamp, A ;

Garvey, T ;

Genz, H ;

Gerth, C ;

Gretchko, V ;

Grigoryan, B ;

Hahn, U ;

Hessler, C ;

Honkavaara, K ;

Hüning, M ;

Ischebeck, R ;

Jablonka, M ;

Kamps, T ;

Körfer, M ;

Krassilnikov, M ;

Krzywinski, J ;

Liepe, M ;

Liero, A ;

Limberg, T ;

Loos, H ;

Luong, M ;

Magne, C ;

Menzel, J ;

Michelato, P ;

Minty, M ;

Müller, UC ;

Nölle, D ;

Novokhatski, A ;

Pagani, C ;

Peters, F ;

Pflüger, J ;

Piot, P ;

Plucinski, L ;

Rehlich, K ;

Reyzl, I .

PHYSICAL REVIEW LETTERS, 2002, 88 (10) :4

[3] 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

[4]

BACHAU H, 1991, PHYS REV A, V44, P3602

[5] The ionization of one-electron diatomic molecules in strong and short laser fields [J].

Barmaki, S ;

Laulan, S ;

Bachau, H ;

Ghalim, M .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2003, 36 (05) :817-824

[6] Differential cross sections for photo-double-ionization of the helium atom [J].

Briggs, JS ;

Schmidt, V .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2000, 33 (01) :R1-R48

[7] Core-excited resonance enhancement in the two-photon complete fragmentation of helium [J].

Colgan, J ;

Pindzola, MS .

PHYSICAL REVIEW LETTERS, 2002, 88 (17) :4-173002

[8]

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

[9] Two-photon double ionization of He [J].

Feng, L ;

van der Hart, HW .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2003, 36 (01) :L1-L7

[10]

Kamta G. Lagmago, 2001, PHYS REV A, V63

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