Laser induced collisional energy transfer in Sr–Li system

doi:10.1088/1674-1056/21/8/083202

中国物理B ›› 2012, Vol. 21 ›› Issue (8): 83202-083202.doi: 10.1088/1674-1056/21/8/083202

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Laser induced collisional energy transfer in Sr–Li system

陈德应^a, 鲁振中^a, 樊荣伟^a, 夏元钦^a, 周志刚^a, 季一勤^b

a National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150001, China;
b Tianjin Key Laboratory of Optical Thin Films, Tianjin Jinhang Institute of Technical Physics, Tianjin 300192, China

收稿日期:2011-12-12 修回日期:2012-01-19 出版日期:2012-07-01 发布日期:2012-07-01

Laser induced collisional energy transfer in Sr–Li system

Chen De-Ying (陈德应)^a, Lu Zhen-Zhong (鲁振中)^a, Fan Rong-Wei (樊荣伟)^a, Xia Yuan-Qin (夏元钦)^a, Zhou Zhi-Gang (周志刚)^a, Ji Yi-Qin (季一勤 )^b

a National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150001, China;
b Tianjin Key Laboratory of Optical Thin Films, Tianjin Jinhang Institute of Technical Physics, Tianjin 300192, China

Received:2011-12-12 Revised:2012-01-19 Online:2012-07-01 Published:2012-07-01
Contact: Chen De-Ying E-mail:luhit@126.com

摘要/Abstract

摘要： A four-state model with considering the relative velocity distribution function for calculating the cross section of laser-induced collisional energy transfer in Sr-Li system is presented and profiles of laser induced collision cross section are obtained. The resulting spectra obtained from different intermediate states are strongly asymmetrical in an opposite asymmetry. Both of the two intermediate states have contributions to the finial state, and none of the intermediate states should be neglected. The peak of the laser-induced collisional energy transfer (LICET) profile shifts toward the red and the FWHM becomes narrower obviously with laser field intensity increasing. A cross section of 1.2× 10^-12 cm² at a laser field intensity of 2.17× 10⁷ V/m is obtained, which indicates that this collision process can be an effective way to transfer energy selectively from a storage state to a target state. The existence of saturation for cross section with the increase of the laser intensity shows that the high-intensity redistribution of transition probabilities is an important feature of this process which is not accounted for in a two-state treatment.

关键词: laser-induced collisional energy transfer, collision cross section, Sr-Li system

Abstract: A four-state model with considering the relative velocity distribution function for calculating the cross section of laser-induced collisional energy transfer in Sr-Li system is presented and profiles of laser induced collision cross section are obtained. The resulting spectra obtained from different intermediate states are strongly asymmetrical in an opposite asymmetry. Both of the two intermediate states have contributions to the finial state, and none of the intermediate states should be neglected. The peak of the laser-induced collisional energy transfer (LICET) profile shifts toward the red and the FWHM becomes narrower obviously with laser field intensity increasing. A cross section of 1.2× 10^-12 cm² at a laser field intensity of 2.17× 10⁷ V/m is obtained, which indicates that this collision process can be an effective way to transfer energy selectively from a storage state to a target state. The existence of saturation for cross section with the increase of the laser intensity shows that the high-intensity redistribution of transition probabilities is an important feature of this process which is not accounted for in a two-state treatment.

Key words: laser-induced collisional energy transfer, collision cross section, Sr-Li system

中图分类号: (Line shapes, widths, and shifts)

32.70.Jz

34.50.-s (Scattering of atoms and molecules)

陈德应, 鲁振中, 樊荣伟, 夏元钦, 周志刚, 季一勤 . Laser induced collisional energy transfer in Sr–Li system[J]. 中国物理B, 2012, 21(8): 83202-083202.

Chen De-Ying (陈德应), Lu Zhen-Zhong (鲁振中), Fan Rong-Wei (樊荣伟), Xia Yuan-Qin (夏元钦), Zhou Zhi-Gang (周志刚), Ji Yi-Qin (季一勤 ). Laser induced collisional energy transfer in Sr–Li system[J]. Chin. Phys. B, 2012, 21(8): 83202-083202.

参考文献 24

[1]	Green W R, Lukasik J, Willison J R, Wright M D, Young J F and Hass S E 1979 Phys. Rev. A 15 1333
[2]	Debarre A 1983 J. Phys. B 16 431
[3]	Brechnignac C, Cahuzac P H and Toschek P E 1980 Phys. Rev. A 21 1969
[4]	Matera M, Mazzoni M, Buffa R, Cavalieri S and Arimondo E 1987 Phys. Rev. A 36 1471
[5]	Geltmen S 1992 Phys. Rev. A 45 4792
[6]	Harris S E 1977 IEEE J. Quantum Electron. 13 972
[7]	Bambini A and Berman P R 1987 Phys. Rev. A 35 3753
[8]	Agresti A, Berman P R, Bambini A and Stefanel A 1988 Phys. Rev. A 38 2259
[9]	Lu Z Z, Chen D Y, Fan R W and Xia Y Q 2011 Chin. Phys. B 20 063202
[10]	Chen D Y, Wang Q and Ma Z G 1996 Acta Opt. Sin. 16 1653 (in Chinese)
[11]	Chen D Y, Wang Q and Ma Z G 1997 Sci. Chin. Ser. A 27 449 (in Chinese)
[12]	Zhang H Y, Chen D Y, Lu Z Z, Fan R W and Xia Y Q 2008 Acta Phys. Sin. 57 7600 (in Chinese)
[13]	Zhang H Y, Chen D Y, Lu Z Z, Xia Y Q and Fan R W 2008 Chin. J. Laser 35 77 (in Chinese)
[14]	Bambini A, Matera M, Agresti A and Bianconi M 1990 Phys. Rev. A 42 6629
[15]	Lisitsa V S and Yakovlenko S I 1974 Sov. Phys. JETP 39 759
[16]	Li Y J, Feng H, Sun W G, Zeng Y Y, Wang X L, Li H D and Fan Q C 2011 Acta Phys. Sin. 60 043401 (in Chinese)
[17]	Yu Y J, Xu Q and Xu X W 2011 Acta Phys. Sin. 60 123402 (in Chinese)
[18]	Lu Z Z, Chen D Y, Fan R W and Xia Y Q 2011 Sci. Chin. G: Phys. Mech. & Astron. 54 1
[19]	Wang H Y, Zhao G Z and Wang X Q 2011 Acta Phys. Sin. 60 043202 (in Chinese)
[20]	Chen X and Mi X W 2011 Acta Phys. Sin. 60 104204 (in Chinese)
[21]	Seely J F 1981 J. Chem. Phys. 75 3321
[22]	Hansen J C, Kuo C H, Grieman F J and Moseley J T 1983 J. Chem. Phys. 79 1111
[23]	Hirschfelder J O and Meath W J 1967 Adv. Chem. Phys. 12 3
[24]	Rose M E 1958 J. Math. Phys. 37 215

Laser induced collisional energy transfer in Sr–Li system

Laser induced collisional energy transfer in Sr–Li system

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