激光场下的氦离子与氢原子碰撞的电荷转移过程
激光场下的氦离子与氢原子碰撞的电荷转移过程
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DOI：
10.1088/0953-4075/49/19/195201
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
王建国
中科院分区：
文献类型：
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作者：
刘春雷;何斌;邹士阳;王建国
通过求解含时薛定谔方程，研究了低能区He2++H碰撞系统的激光修正电子俘获过程。与无激光和低能量弱激光情况相比，观察到总态选择电荷转移截面和主态选择电荷转移截面明显增强。还研究了激光脉冲相位对截面的影响，观察到随着入射能量的增加，在某些脉冲位相截面减小的现象。分析了碰撞系统动力学的时间演化，以探讨碰撞截面与脉冲相位的关系。
Laser-modified electron capture processes are studied for the He2++H collision system in the.low projectile energy region by solving the time-dependent Schrödinger equation. An obvious.enhancement of the total and dominant state-selective charge-transfer cross sections are observed.with respect to laser-free and weaker laser cases for low projectile energy. The influence of the.laser pulse phase upon the cross sections is also studied and the reduction of the cross section is.observed at some pulse phases with the increasing of the projectile energy. The time evolution.for the dynamics of the collision system is analyzed in order to explore the dependence of the.cross sections upon the pulse phase.