原子非序列双电离的多次返回碰撞电离机理分析

辛国国; 叶地发; 赵清; 刘杰

doi:10.7498/aps.60.093204

摘要

本文采用三维半经典再散射模型研究了He原子在高光强(1.5×1015 W/cm2)、少周波激光脉冲作用下的非序列双电离问题,重点分析了沿激光电场极化方向的动量关联谱.发现两个电子沿相反方向发射的比例明显比中等光强区(7×1014 W/cm2)和低光强区(2.5×1014 W/cm2),以及同等光强的长脉冲情形都偏高, 同时V形结构也更加明显.通过轨道"回溯"分析, 进一步深入

关键词:

强场 /
非序列双电离 /
再散射

The nonsequential double ionization of helium by high-intensity (1.5×1015 W/cm2) few-cycle laser pulses is investigated using a three-dimensional semi-classical rescattering model, with emphasis on the longitudinal correlated momentum spectra. We find that the percentage of opposite-hemisphere emission in this case is remarkably higher than those produced by laser pulses with medium-intensity (e.g., 7×1014 W/cm2) and low-intensity (e.g., 2.5×1014 W/cm2) those procuced by the laser pulses pulses with, and also the same intensies but longer laser pulses. Meanwhile, the V-shape structure is more pronounced. We identify the underlying mechanisms with tracing back the individual trajectories, and find that the single-and the multi-return induced collision-ionization are mainly responsible for the opposite- and the same-hemisphere emission, respectively. The dependences of these two different mechanisms on peak intensity and pulse length are predicted.

Keywords:

作者及机构信息

(1)北京理工大学理学院,北京 100081; (2)北京理工大学理学院,北京 100081;北京应用物理与计算数学研究所,北京 100088; (3)北京应用物理与计算数学研究所,北京 100088

基金项目: 科技部创新项目(批准号:2009IM033000), 国家自然科学基金(批准号:50935001)和111引智计划资助的课题.

Authors and contacts

(1)Institute of Applied Physics and Computational Mathematics, Beijing 100088, China; (2)School of Science, Beijing Institute of Technology, Beijing 100081, China; (3)School of Science, Beijing Institute of Technology, Beijing 100081, China;Institute of Applied Physics and Computational Mathematics, Beijing 100088, China

参考文献

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[31]	Liu J, Chen S G, Bao D H 1995 Acta Phys. Sin. 4 881 (Overseas Eidtion)
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施引文献

[1]	l'Huillier A, Lompre L A, Mainfray G, Manus C 1983 Phys. Rev. A 27 2503
[2]	Walker B, Sheehy B, DiMauro L F, Agostini P, Schafer K J, Kulander K C 1994 Phys. Rev. Lett. 73 1227
[3]	Dietrich P, Burnett N H, Ivanov M, Corkum P B 1994 Phys. Rev. A 50 R3585
[4]	Augst S, Talebpour A, Chin S L, Beaudoin Y, Chaker M 1995 Phys. Rev. A 52 R917
[5]	Eichmann U, Dörr M, Maeda H, Becker W, Sandner W 2000 Phys. Rev. Lett. 84 3550
[6]	Walker B, Mevel E, Yang B, Breger P, Chambaret J P, Antonetti A, Dimauro L F, Agostini P 1993 Phys. Rev. A 48 R894
[7]	Gillen G D, Walker M A, Van Woerkom L D 2001 Phys. Rev. A 64 043413
[8]	Cornaggia C, Hering Ph 2000 Phys. Rev. A 62 023403
[9]	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
[10]	Rudenko A, de Jesus V L B, Ergler Th, Zrost K, Feuerstein B, Schröter C D, Moshammer R, Ullrich J 2007 Phys. Rev. Lett. 99 263003
[11]	Weber Th,Glessen H, Weckenbrock, Staudte A, Splelberger, Jagutzkl O, Mergel V, Vollmer M,Dörner R 2000 Nature 405 658
[12]	Ye D F, Liu X, Liu J 2008 Phys. Rev. Lett. 101 233003
[13]	Haan S L, Van Dyke J S, Smith Z S 2008 Phys. Rev. Lett. 101 113001
[14]	Emmanouilidou A 2008 Phys. Rev. A 78 023411
[15]	Chen Z, Liang Y, Lin C D 2010 Phys. Rev. Lett. 105 253201
[16]	Liu Y, Tschuch S, Rudenko A, Dörr M, Siegel M, Morgner U, Moshammer R, Ullrich J 2008 Phys. Rev. Lett. 101 053001
[17]	Liu Y, Ye D, Liu J, Rudenko A, Tschuch S, Dörr M, Siegel M, Morgner U, Gong Q, Moshammer R, Ullrich J 2010 Phys. Rev. Lett. 104 173002
[18]	Qu W X, Hu S X, Xu Z Z 1999 Acta Phys. Sin. 48 825 (in Chinese) [屈卫星、胡素兴、徐至展 1999 物理学报 48 825]
[19]	Yu X G, Wang B B, Cheng T W, Li X F, Fu P M 2005 Acta Phys. Sin. 54 3542 (in Chinese) [余晓光、王兵兵、呈太旺、李晓峰、傅盘铭 2005 物理学报 54 3542]
[20]	Cao S P, Ma X W, Dorn A, Dörr M, Ullrich J 2007 Acta Phys. Sin. 56 6386 (in Chinese)[曹士娉、马新文、 Dorn A、Dörr M、 Ullrich J 2007 物理学报 56 6386]
[21]	Parker J S, Doherty B J S, Taylor K T, Schultz K D, Blaga C I, DiMauro L F 2006 Phys. Rev. Lett. 96 133001
[22]	Yu W W, Guo J, Liu X S 2010 Chin. Phys. B 19 023201
[23]	Hu B, Liu J, Chen S G 1997 Phys. Lett. A 236 533
[24]	Fu L B, Liu J, Chen J, Chen S G 2001 Phys. Rev. A 63 043416
[25]	Liu J, Ye D F, Chen J, Liu X 2007 Phys. Rev. Lett. 99 013003
[26]	Ye D F, Liu J 2010 Phys. Rev. A 81 043402
[27]	Li Y, Yang S P, Jia X Y, Chen J 2010 Chin. Phys. B 19 043303
[28]	Corkum P B 1993 Phys. Rev. Lett. 71 1994
[29]	Paulus G G, Becker W, Nicklich W, Walther H 1994 J. Phys. B: At. Mol. Opt. Phys. 27 L703
[30]	Li H Y, Wang B B, Jiang H B, Chen J, Li X F, Liu J,Gong Q H, Fu P M 2008 Acta Phys. Sin. 57 124 (inChinese) [李洪云、王兵兵、蒋红兵、陈京、李晓峰、刘杰、龚旗煌、傅盘铭 2008 物理学报 57 124]
[31]	Liu J, Chen S G, Bao D H 1995 Acta Phys. Sin. 4 881 (Overseas Eidtion)
[32]	Liu J, Chen S G 1997 Commun. Theor. Phys. 28 475
[33]	Ammosov M V, Delone N B, Krainov V P 1986 Sov. Phys. JETP 64 1191
[34]	Abrines R, Percival I C 1966 Proc. Phys. Soc. 88 861
[35]	Haan S L, Breen L, Karim A, Eberly J H 2006 Phys. Rev. Lett. 97 103008
[36]	Liu X, Figueira de Morisson Faria C, Becker W, Corkum P B 2006 J. Phys. B: At. Mol. Opt. Phys. 39 L305
[37]	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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