| ATOMIC AND MOLECULAR PHYSICS |
|
|
|
|
Interference Effect of Direct Photodetachment for H? Ions in a Short Laser Pulse |
| CHEN Jian-Hong1,2, ZHAO Song-Feng1, LI Xiao-Yong1, ZHOU Xiao-Xin1** |
1College of Physics and Electronic Engineering, and Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province, Northwest Normal University, Lanzhou 730070
2Department of Physics, Lanzhou City University, Lanzhou 730070 |
|
| Cite this article: |
|
CHEN Jian-Hong, ZHAO Song-Feng, LI Xiao-Yong et al 2012 Chin. Phys. Lett. 29 093201 |
|
|
|
|
Abstract The electron detachment of negative hydrogen ions exposed to a few-cycle linearly polarized laser pulse is investigated in the context of the strong field approximation evaluated by the saddle-point method. The results show that the angular distributions of the laser-induced photoelectron obtained by the saddle-point method are in good agreement with both the experimental results and the numerical-integration results. More importantly, we show that the unusual maximum in the angular distributions of photoelectrons for negative hydrogen ions can be explained by the quantum interference effect based on the saddle-point method.
|
|
|
Received: 14 February 2012
Published: 01 October 2012
|
|
| PACS: |
32.80.Rm
|
(Multiphoton ionization and excitation to highly excited states)
|
| |
32.80.Fb
|
(Photoionization of atoms and ions)
|
| |
42.50.Hz
|
(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
|
|
|
|
|
|
[1] Krausz F and Ivanov M 2009 Rev. Mod. Phys. 81 163
[2] Protopapas M, Keitel C H and Knight P L 1997 Rep. Prog. Phys. 60 389
[3] Keldysh L V 1964 Zh. Eksp. Teor. Fiz. 47 1945
Keldysh L V 1965 Sov. Phys. JETP 20 1307
Faisal F H M 1973 J. Phys. B 6 L89
Reiss H R 1980 Phys Rev. A 22 1786
[4] Becker W, Grasbon F, Kopold R, Milo?evi? D B, Paulus G G and Walther H 2002 Adv. At. Mol. Opt. Phys. 48 35
[5] Popov V S 2004 Phys. Usp. 47 855
[6] Becker A and Faisal F H M 2005 J. Phys. B 38 R1
[7] Milo?evi? D B, Gazibegovic-Busuladzic A and Becker W 2003 Phys. Rev. A 68 050702(R)
[8] Maharjan C M, Alnaser A S, Litvinyuk I, Ranitovic P and Cocke C L 2006 J. Phys. B 39 1955
[9] Morishita T, Chen Z J, Watanabe S and Lin C D 2007 Phys. Rev. A 75 023407
[10] Zhou X X, Chen Z J, Morishita T, Le A T and Lin C D 2008 Phys. Rev. A 77 053410
[11] Du M L 1989 Phys. Rev. A 40 4983
[12] Tang T T and Wang D H 2011 J. Phys. Chem. C 115 20529
[13] Zhao H J and Du M L 2009 Phys. Rev. A 79 023408
[14] Reichle R, Helm H and Kiyan I Yu 2001 Phys. Rev. Lett 87 243001
[15] Reichle R, Kiyan I Y and Helm H 2003 J. Mod. Opt. 50 461
[16] Gribakin G F and Kuchiev M Yu 1997 Phys. Rev. A 55 3760
[17] Shearer S F C, Smyth M C and Gribakin G F 2011 Phys. Rev. A 84 033409
[18] Shearer S F C and Addis C R J 2012 Phys. Rev. A 85 063409
[19] Paulus G G, Zacher F and Walther H 1998 Phys. Rev. Lett. 80 484
[20] Press W H, Teukolsky S A, Vetterling W T and Flannery B P 2007 Numerical Recipe(3rd edition): The Art of Scientific Computing (London: Cambridge) |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
