Strong field multiple ionization as a route to electron dynamics in a van der Waals cluster.
Strong field multiple ionization as a route to electron dynamics in a van der Waals cluster.
复制标题
DOI：
10.1103/physrevlett.111.083003
复制
发表时间：
2013-08
影响因子：
8.6
通讯作者：
J. Wu;X. Gong;M. Kunitski;F. Amankona-Diawuo;L. Schmidt;T. Jahnke;A. Czasch;T. Seideman;R. Dörner
中科院分区：
文献类型：
--
作者：
J. Wu;X. Gong;M. Kunitski;F. Amankona-Diawuo;L. Schmidt;T. Jahnke;A. Czasch;T. Seideman;R. Dörner
我们研究强激光场从范德华 (vdW) 簇中移除多个电子的顺序。 N2Ar 具有平衡 T 形几何结构，包含共价键和 vdW 键，是一个简单而丰富的例子。有趣的是，当 vdW 键沿激光场偏振矢量排列时，有利于 N2Ar 的双电离和三电离以及 vdW 键断裂。然而，当共价键和 vdW 键同时断裂时，共价键相对于激光场的方向决定了三重电离。讨论了电子局域辅助增强电离和分子轨道轮廓主导、方向相关的电离，以揭示 N2Ar 不同位点的电子释放顺序。
We study the order in which a strong laser field removes multiple electrons from a van der Waals (vdW) cluster. The N2Ar, with an equilibrium T-shaped geometry, contains both a covalent and a vdW bond and serves as a simple yet rich example. Interestingly, the fragmenting double and triple ionizations of N2Ar with vdW bond breaking are favored when the vdW bond is aligned along the laser field polarization vector. However, the orientation of the covalent bond with respect to the laser field rules the triple ionization when both the covalent and vdW bonds are simultaneously broken. Electron-localization-assisted enhanced ionization and molecular orbital profile-dominated, orientation-dependent ionization are discussed to reveal the order of electrons release from different sites of N2Ar.