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Sequential ionization and energy gain of bound electrons in classical modeling of atoms in strong laser fields

机译:在强激光场中原子的经典建模中,束缚电子的顺序电离和能量增益

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摘要

Classical mechanics and classical ensembles have provided numerous insights into the dynamics of strong-fieldndouble ionization. In this paper, we show that in classical multidimensional modeling, the laser intensity at whichnsequential ionization begins to dominate depends on the softening of the interaction between the electron andnnucleus.We show that an unsoftened interaction in two or three dimensions can lead to classical orbits in which annelectron can start deep in the nuclear potential-energy well, gain energy from the oscillating laser field, and ionizenover the barrier without any recollision.We discuss how this energy gain occurs, with the electron orbit favoringnone side of the nucleus or the other, depending on which side corresponds with the rising potential-energy curve.
机译:古典力学和古典合奏为强场双电离的动力学提供了许多见解。在本文中,我们表明在经典的多维模型中,顺序电离开始占主导地位的激光强度取决于电子与原子核之间相互作用的软化。我们表明,在两维或三维中未软化的相互作用可导致产生经典的轨道。哪种电子可以从核势能井深处开始,从振荡的激光场中获取能量,并在没有任何碰撞的情况下在势垒层电离。我们讨论了这种能量如何发生,其中电子轨道偏向原子核的另一侧,取决于哪一侧与上升的势能曲线相对应。

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  • 来源
    《PHYSICAL REVIEW A》 |2012年第3期|1-9|共9页
  • 作者单位

    Department of Physics and Astronomy Calvin College Grand Rapids Michigan 49546 USA;

    Department of Physics and Astronomy Calvin College Grand Rapids Michigan 49546 USA;

    Department of Physics and Astronomy Calvin College Grand Rapids Michigan 49546 USA;

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  • 正文语种 eng
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