Suppression of Recollision-Excitation Ionization in Nonsequential Double Ionization of Molecules by Mid-Infrared Laser Pulses
ZHANG Dong-Ling, TANG Qing-Bin** , GAO Yang
College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000
Abstract ：The electron dynamics in strong field non-sequential double ionization of nitrogen molecules is investigated with the three-dimensional (3D) classical ensemble model. The numerical results show that the longitudinal momentum spectrum of the doubly charged ions evolves from a wide single-hump structure at the near-infrared (NIR) regime into a double-hump structure when the wavelength enters the mid-infrared (MIR) regime. Back analysis reveals that in the MIR regime, the recollision excitation with subsequent ionization (RESI) is strongly suppressed with increasing wavelength, which results in the double-hump structure of the ions momentum spectra. This double-hump structure becomes more pronounced as the wavelength further increases because the contribution of the RESI further decreases.
收稿日期: 2012-10-23
出版日期: 2013-03-02
:
32.80.Fb
(Photoionization of atoms and ions)
32.80.Rm
(Multiphoton ionization and excitation to highly excited states)
[1] Weber Th, Giessen H, Weckenbrock M, Urbasch G, Staudte A, Spielberger L, Jagutzki O, Mergel V, Vollmer M and D?rner R 2000 Nature 405 658 1994 Phys. Rev. Lett. 73 1227 2009 Phys. Rev. A 80 023412 2010 Opt. Express 18 16025 2001 Phys. Rev. Lett. 87 043003 2012 New J. Phys. 14 013001 2004 Phys. Rev. Lett. 92 213002 2008 Chin. Phys. Lett. 25 3950 2007 Phys. Rev. Lett. 99 013003 2008 Phys. Rev. Lett. 101 053001 2011 Opt. Lett. 36 2758 2000 Phys. Rev. Lett. 85 3781 2000 Phys. Rev. Lett. 85 4707 2010 Phys. Rev. A 82 053402 2006 Phys. Rev. Lett. 97 103008 2008 J. Phys. B 41 125601 2011 Opt. Express 19 2301 1993 Phys. Rev. Lett. 71 1994 2009 Nat. Phys. 5 335 2009 Phys. Rev. Lett. 103 093001 2009 Opt. Lett. 34 2102 2009 Phys. Rev. Lett. 102 093002 2010 Opt. Express 18 14293 2008 Opt. Express 16 9795 2008 J. Phys. B 41 031001 2008 New J. Phys. 10 025007 2012 Opt. Express 20 19580 2012 Phys. Rev. Lett. 108 033002 2010 Opt. Express 18 632 2009 J. Phys. B 42 134009 Acta Phys. Sin. 59 7775 (in Chinese)Acta Phys. Sin. 60 053205 (in Chinese)2012 Phys. Rev. Lett. 109 053004 2012 Opt. Express 20 20201 2004 Phys. Rev. Lett. 92 173001 2011 Opt. Express 19 5627 2006 J. Phys. B 39 L305
[1]
.
[2]
.
[3]
.
[4]
.
[5]
.
[6]
.
[7]
.
[8]
.
[9]
.
[10]
.
[11]
.
[12]
.
[13]
.
[14]
.
[15]
.
2013, Vol. 30 
