| ATOMIC AND MOLECULAR PHYSICS |
|
|
|
|
Coherent Control of Photodetachment of H- in Perpendicular Electric and Magnetic Fields |
| WANG De-Hua, HUANG Kai-Yun |
| School of Physics and Electronic Engineering, Ludong University, Yantai 264025 |
|
| Cite this article: |
|
WANG De-Hua, HUANG Kai-Yun 2009 Chin. Phys. Lett. 26 093201 |
|
|
|
|
Abstract Using the semiclassical closed orbit theory, we study the coherent control of the photodetachment of H- by a single and double-pulse laser in perpendicular electric and magnetic fields. Theoretically, dependences of calculated cross section on laser pulse widths, time delays, relative phases and the classical detached electron's closed orbit period are presented and discussed in detail. The results suggest that for the single pulse laser, if the pulse width is shorter than the particular closed orbit period, then the contribution of that closed orbit to the photodetachment cross section is reduced. While for the double pulse laser, the cross section not only depends on the pulse width, but also depends on the time delay and the relative phase of the two pulses. If the pulse delay time equals to the period of one closed orbit, then the contribution of that orbit becomes significant. Therefore, we can use the pulse laser to control the photodetachment process of ion or atom in external fields.
|
| Keywords:
32.80.Gc
32.60.+i
32.80.Qk
42.50.Vk
|
|
|
Received: 27 March 2009
Published: 28 August 2009
|
|
| PACS: |
32.80.Gc
|
(Photodetachment of atomic negative ions)
|
| |
32.60.+i
|
(Zeeman and Stark effects)
|
| |
32.80.Qk
|
(Coherent control of atomic interactions with photons)
|
| |
42.50.Vk
|
|
|
|
|
|
|
[1] Du M Land Delos J B 1988 Phys. Rev. A 38 1896
[2] Du M Land Delos J B 1988 Phys. Rev. A 38 1913
[3] Liu Z Y et al 1996 Phys. Rev. A 54 4078
[4] Peters A D and Delos J B 1993 Phys. Rev. A 473020
[5] Gao J and Delos J B 1992 Phys. Rev. A 46 1449
[6] Wang D H and Ding ShiLiang 2003 Phys. Rev. A 68 023405
[7]Yukich J N et al 1997 Phys. Rev. A 55 R3303
[8]Du M L 1995 Phys. Rev. A 52 1143
[9] Du M L 2003 Commun. Theor. Phys. 39 705
[10] Wang Q L et al 1993 Phys. Rev. A 48 R1741
[11] Wang Q L et al 1995 Phys. Rev. A 51 1260
[12] Peng L Y et al 2006 Phys. Rev. A 74 023402
[13] Wang D H and Lin S L 2006 Sci. Chin. G 49 178
[14]Yu Y L et al 2006 Chin. Phys. Lett. 23 2948
[15] Zhang G T and Liu X S 2009 J. Phys. B: At. Mol. Opt.Phys. 42 125603
[16]Wang L F et al 2009 J. Chem. Phys. 130 174706 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
