Direct versus delayed pathways in strong-field non-sequential double ionization
Direct versus delayed pathways in strong-field non-sequential double ionization
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DOI：
10.1088/1367-2630/13/4/043001
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发表时间：
2011-04-04
影响因子：
3.3
通讯作者：
Taylor, K. T.
中科院分区：
文献类型：
--
作者：
Emmanouilidou, A.;Parker, J. S.;Taylor, K. T.
本文报道了390 nm激光驱动氦原子双电离的全维量子和经典计算。量子和经典的结果之间的良好协议进行观察。我们确定了两个主要的非顺序DI途径的相对重要性：直接与几乎同时喷射的两个电子和延迟。我们发现，在与总电子能量无关的小强度下，延迟途径占主导地位，但在高强度下，直接途径在总能量达到一定上限时占主导地位，该上限随着强度的增加而增加。这种增加强度的解释。
We report full-dimensionality quantum and classical calculations of the double ionization (DI) of laser-driven helium at 390 nm. Good agreement between the quantum and classical results is observed. We identify the relative importance of the two main non-sequential DI pathways: the direct-with an almost simultaneous ejection of both electrons-and the delayed. We find that the delayed pathway prevails at small intensities independently of total electron energy, but at high intensities the direct pathway predominates up to a certain upper limit in total energy, which increases with intensity. An explanation of this increase with intensity is provided.