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Nonsequential double ionization (NSDI) of Ar atom below the recollision threshold is investigated using the three-dimensional classical ensembles. The calculated results reveal a dominance of events for electron emission into opposite hemispheres, a clear minimum of the correlated electron-electron momentum distributions at the origin and a single peak structure of the Ar2+ ions longitudinal momentum spectra near zero momentum. The momentum spectra of the Ar2+ ions agree with the experimental results 101 053001 (2008)] quantitatively. Trajectory back analyses show that the microscopic physical mechanisms of Ar NSDI are distinct for different intensities of the laser. When laser intensity equal to 0.7×1014 W/cm2, one recollision dominates the process of the recollision. However,the domination convert to multiple recollisions as the laser intensity decreases to 0.4×1014 W/cm2. In addition, the Coulomb attraction between the ion and electron plays an important role in microscopic dynamics of the electron in the process of Ar NSDI and eventually influences the final-state correlated electron-electron momentum distributions strongly.
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Keywords:
- nonsequential double ionization /
- Coulomb attraction /
- recollision threshold /
- electron correlation
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[1] Fittinghoff D N, Bolton P R, Chang B, Kulander K C 1992 Phys. Rev. Lett. 69 2642
[2] Corkum P B 1993 Phys. Rev. Lett. 71 1994
[3] Schafer K J, Young B, DiMauro L F,Kulander K C 1993 Phys. Rev. Lett. 70 1599
[4] Liao Q, Lu P X, Lan P F, Yang Z Y, Li Y H 2008 Opt. Express 16 6455
[5] Zhou Y M, Liao Q, Lu P X 2009 Phys. Rev. A 80 023412
[6] Liao Q, Lu P X, Zhang Q B, Hong W Y, Yang Z Y 2008 J. Phys. B 41 125601
[7] Zhou Y M, Liao Q, Lan P F, Lu P X 2008 Chin. Phys. Lett. 25 3950
[8] Li H Y, Chen J, Jiang H B, Liu J, Fu P M , Gong Q H , Yan Z C ,Wang B B 2009 J. Phys. B 42 125601
[9] Paulus G G, Grasbon F, Dreischuh A, Walther H, Kopold R, Becker W 2000 Phys. Rev. Lett. 84 3791
[10] Liao Q, Lu P X, Lan P F, Cao W, Li Y H 2008 Phys. Rev. A 77 013408
[11] Lan P F, Lu P X, Cao W, Wang X L 2005 Phys. Rev. E 72 016622
[12] Cao W, Lu P X, Lan P F, Wang X L, Yang G 2007 Opt. Express 15 530
[13] Lan P F, Lu P X, Cao W, 2007 Acta Phys. Sin. 56 2482—2487 (in Chinese) [兰鹏飞、 陆培祥、 曹 伟 2007 物理学报 56 2482]
[14] Cao W, Lu P X, Lan P F, Wang X L, Yang G, Li Y H 2007 Phys. Rev. A 75 063423
[15] Lan P F, Lu P X, Cao W, Li Y H, Wang X L 2007 Phys. Rev. A 76 021801
[16] 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 物理学报 58 4908]
[17] Niikura H, Légaré F, Hasbani R, Bandrauk A D, Ivanov M Y, Villeneuve D M, Corkum P B 2002 Nature 417 917
[18] Niikura H, Légaré F, Hasbani R, Bandrauk A D, Ivanov M Y, Villeneuve D M, Corkum P B 2003 Nature 421 826
[19] Walker B, Sheehy B, DiMauro L F, Agostini P, Schafer K J, Kulander K C 1994 Phys. Rev. Lett. 73 1227
[20] 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
[21] Liao Q, Lu P X, Zhang Q B, Yang Z Y, Wang X B 2008 Opt. Express 16 17070
[22] Liao Q, Lu P X 2009 Opt. Express 17 15550
[23] Zhou Y M, Liao Q, Zhang Q B, Hong W Y, Lu P X 2010 Opt. Express 18 632
[24] Tong A H, Liao Q, Zhou Y M, Lu P X 2010 Opt. Express 18 9064
[25] Weber T, Weckenbrock M, Staudte A, Spielberger L, Jagutzki O, Mergel V, Afaneh F, Urbasch G, Vollmer M, Giessen H, Dörner R 2000 Phys. Rev. Lett. 84 443
[26] Moshammer R, Feuerstein B, Schmitt W, Dorn A, schröter C D, Ullrich J, Rottke H, Trump C, Wittmann M, Korn G, Hoffmann K, Sandner W 2000 Phys. Rev. Lett. 84 447
[27] Weber T, Giessen H, Weckenbrock M, Urbasch G, Staudte A, Spielberger L, Jagutzki O, Mergel V, Vollmer M, Dorner R 2000 Nature 405 658
[28] Lein M, Gross E K U, Engel V 2000 Phys. Rev. Lett. 85 4707
[29] 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
[30] Liu Y Q, Tschuch S, Rudenko A, Dürr M, Siegel M, Morgner U, Moshammer R, Ullrich J 2008 Phys. Rev. Lett. 101 053001
[31] Haan S L, Van Dyke J S, Smith Z S 2008 Phys. Rev. Lett. 101 113001
[32] Zhou Y M, Liao Q, Lu P X 2010 Opt. Express 18 16025
[33] 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 物理学报 59 7775]
[34] 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
[35] Kreβ M, Loffler T, Thomson M D, Dorner R, Gimpel H, Zrost K, Ergler T, Moshammer R, Morgner U, Ullrich J, Roskos H 2006 Nature Phys. 2 327
[36] Rudenko A, Jesus V L B, Ergler Th, Zrost K, Feuerstein B, Schröter C D, Moshammer R, Ullrich J 2007 Phys.Rev. Lett. 99 263003
[37] Haan S L, Breen L, Karim A 2007 Opt. Express 15 767
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