Coulomb Potential Recapture Effect in Above-Barrier Ionization in Laser Pulses
WANG Bing-Bing1, LI Xiao-Feng1, FU Pan-Ming1, CHEN Jing2, LIU Jie2
1Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080
2Center for Nonlinear Studies, Institute of Applied Physics and Computational Mathematics, Beijing 100088
Coulomb Potential Recapture Effect in Above-Barrier Ionization in Laser Pulses
WANG Bing-Bing1;LI Xiao-Feng1;FU Pan-Ming1;CHEN Jing2;LIU Jie2
1Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080
2Center for Nonlinear Studies, Institute of Applied Physics and Computational Mathematics, Beijing 100088
Abstract： The Coulomb potential recapture effect in above-barrier ionization with ultrashort long-wavelength laser pulses is investigated theoretically by solving the one-dimensional time-dependent Schrödinger equation. We find that electrons can be recaptured with considerable possibility by the Coulomb potential near the end of the pulse though atoms are ionized almost completely within the first few half optical cycles. Therefore there is a high probability of the atom surviving after the pulse. We also check this process in the three-dimensional case and find that this kind of stabilization can still exist in three-dimensional atoms.
2006, Vol. 23 
