不同分子取向下氢分子非次序双电离对核间距的依赖关系

童爱红; 廖青; 周月明; 陆培祥

doi:10.7498/aps.60.043301

摘要

利用三维经典系综模型研究了氢分子非次序双电离对核间距的依赖性.在不同分子取向下,氢分子双电离率随核间距的增大而先增大后减小,在核间距为4a.u.时取最大值.氢分子非次序双电离对核间距的依赖性随分子轴与激光偏振方向间夹角φ的增大而减弱.φ=0时,氢分子非次序双电离包含丰富的相关模式,对核间距有强烈的依赖性φ=π/2时,不同核间距下的相关模式相似,重碰撞在双电离过程中发挥更重要的作用.这些结果表明分子结构对双原子分子非次序双电离有重要影响.

关键词:

Abstract

Using a three-dimensional classical ensemble, we have investigated the internuclear distance (R) dependence of nonsequential double ionization (NSDI) of H2 molecules. In all alignments, as R increases, the double ionization (DI) rate first increases and then decreases, and it reaches its maxima when R is 4a.u.. The dependence of NSDI of H2 on R weakens as the angle between molecular axis and laser polarization(φ) increases. When φ is zero, the NSDI of H2 provides rich correlation patterns, which is strongly dependent on R. When φ is π/2, the correlation patterns are similar for different values of R and recollisions play a more important role in DI process. These results indicate that molecular structure has an important influence on NSDI of diatomic molecules.

Keywords:

作者及机构信息

1.
武汉光电国家实验室(筹),华中科技大学光电子科学与工程学院,武汉 430074

基金项目: 国家重点基础研究发展计划(批准号:2006CB806006),国家自然科学基金(批准号:10774054)资助的课题.

Authors and contacts

1.
Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology,Wuhan 430074,China

参考文献

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[21]	Tong A H, Liao Q, Zhou Y M, Lu P X 2010 Opt. Express 18 9064
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施引文献

[1]	Lan P F, Lu P X, Li F, Li Y H, Yang Z Y 2008 Opt. Express 16 5868
[2]	Hong W Y, Yng Z Y, lan P F, Zhang Q B, Li Q G, Lu P X, 2009 Acta Phys. Sin. 58 4914 (in Chinese) [洪伟毅、杨振宇、兰鹏飞、张庆彬、李钱光、陆培祥 2009 58 4914]
[3]	Zhang Q B, Lan P F, Hong W Y, Liao Q, Yang Z Y, Lu P X 2009 Acta Phys. Sin. 58 4908 (in Chinese) [张庆彬、兰鹏飞、洪伟毅、廖青、杨振宇、陆培祥 2009 58 4908]
[4]	Liao Q, Lu P X, Lan P F, Cao W, Li Y H 2008 Phys. Rev. A 77 013408
[5]	Paulus G G, Lindner F, Walther H, Baltuska A, Goulielmakis E, Lezius M, Krausz F 2003 Phys. Rev. Lett. 91 253004
[6]	Lein M, Gross E K U, Engel V 2000 Phys. Rev. Lett. 85 4707
[7]	Saugout S, Cornaggia C 2006 Phys. Rev. A 73 041406(R)
[8]	Zhou Y M, Liao Q, Zhang Q B, Hong W Y, Lu P X 2010 Opt. Express 18 632
[9]	L’Huillier A, Lompre L A, Mainfray G, Manus C 1983 Phys. Rev. A 27 2503
[10]	Walker B, Sheehy B, DiMauro L F, Agostini P, Schafer K J, Kulander K C 1994 Phys. Rev. Lett. 73 1227
[11]	Liu X, Rottke H, Eremina E, Sandner W, Goulielmakis E, Keeffe K O, Lezius M, Krausz F, Lindner F, Schatzel M G, Paulus G G, Walther H 2004 Phys. Rev. Lett. 93 263001
[12]	Liao Q, Lu P X, Zhang Q B, Yang Z Y, Wang X B 2008 Opt. Express 16 17070
[13]	Corkum P B 1993 Phys. Rev. Lett. 71 1994
[14]	Zuo T, Bandrauk A D 1996 Phys. Rev. A 52 R2511
[15]	Saugout S 2008 Phys. Rev. A 77 023404
[16]	Gibson G N, Li M, Guo C, Neira J 1997 Phys. Rev. Lett. 79 2022
[17]	Trump C, Rottke H, Wittmann M, Korn G, Sandner W, Lein M, Engel V 2000 Phys. Rev. A 62 063402
[18]	Yu H, Zuo T, Bandrauk A D 1996 Phys. Rev. A 54 3290
[19]	Saenz A 2000 Phys. Rev. A 61 051402
[20]	Alnaser A S, Tong X M, Osipov T, Voss S, Maharjan C M, Ranitovic P, Ulrich B, Shan B, Chang Z, Lin C D, Cocke C L 2004 Phys. Rev. Lett.93 183202
[21]	Tong A H, Liao Q, Zhou Y M, Lu P X 2010 Opt. Express 18 9064
[22]	Codling K, Frasinski L J, Hatherly P A 1989 J. Phys. B 22 L321
[23]	Haan S L, Breen L, Karim A, Eberly J H 2006 Phys. Rev. Lett. 97 103008
[24]	Haan S L, Van Dyke J S, Smith Z S 2008 Phys. Rev. Lett. 101 113001
[25]	Liao Q, Lu P X 2009 Opt. Express 17 15550
[26]	Zhou Y M, Liao Q, Lu P X 2009 Phys. Rev. A 80 023412
[27]	Zhou Y M, Liao Q, Lan P F, Lu P X 2008 Chin.Phys.Lett. 25 3950
[28]	Tang Q B, Zhang D L, Yu B H, Chen D 2010 Acta Phys. Sin. 59 7775 (in Chinese) [汤清彬、张东玲、余本海、陈东 2010 59 7775]
[29]	Nguyen-Dang T T, Chteauneuf F, Manoli S 1997 Phys. Rev. A 56 2142
[30]	Staudte A, Ruiz C, Schöffler M, Schössler S, Zeidler D, Weber Th, Meckel M, Villeneuve D M, Corkum P B, Becker A, Dörner R 2007 Phys. Rev. Lett. 99 263002
[31]	Weber Th, Giessen H, Weckenbrock M, Urbasch G, Staudte A, Spielberger L, Jagutzki O, Mergel V, Vollmer M, Dörner R 2000 Nature 405 658
[32]	Feuerstein B, Moshammer R, Fischer D, Dorn A,Schröter C D, Deipenwisch J, Crespo Lopez-Urrutia J R, Höhr C, Neumayer P, Ullrich J, Rottke H, Trump C, Wittmann M, Korn G, Sandner W 2001 Phys. Rev. Lett. 87 043003

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