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首页> 外文会议>NATO Advanced Research Workshop on Super-Intense Laser-Atom Physics Sep 24-30, 2000 Han-sur-Lesse, Belgium >ELECTRON MOMENTUM DISTRIBUTIONS FOR DOUBLE IONIZATION IN THE STRONG FIELD LIMIT
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ELECTRON MOMENTUM DISTRIBUTIONS FOR DOUBLE IONIZATION IN THE STRONG FIELD LIMIT

机译：强场限制下双电离的电子动量分布

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摘要

In conclusion, we have developed an approximate, semiclassical and largely ana ytical theory of the two-electron distributions arising from nonsequential double ionization of atoms by strong laser fields and applied it to derive qualitative estimates for the shape of the momentum distribution of doubly charged ions. It has been shown that the effect of electron - electron correlation ab initio accounted for by the Keldysh-type theories of the nonsequential double ionization in is expressed, in the tunneling regime, in terms of the cross-section for impact ionization in the Born approximation. As well it is has been shown that though the two-humped structure of the distribution in the ion momentum along the direction of the laser field owes its origin to the kinematics of the reseattering process real position and width of the maxima are acutely sensitive to the shape of the inelastic cross section.
机译：总之，我们已经开发了一种近似的，半经典的并且基本上是解析的理论，该理论是由强激光场对原子进行的非顺序双电离所产生的双电子分布的一种，并应用它来得出对双电荷离子的动量分布形状的定性估计。已经证明，在隧穿状态下，以不连续双电离的Keldysh型理论从头算起的电子-电子相关性的影响表示为Born近似中碰撞电离的横截面。 。同样已经表明，尽管沿激光场方向的离子动量分布的两峰结构是由于重散射过程的运动学而引起的，但实际的最大值和最大值的位置对宽度还是非常敏感的。非弹性横截面的形状。

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