Electron-electron collision dynamics of the four-electron escape in Be close to threshold

被引：1
|
作者：
Emmanouilidou, A. [1 ,2 ]
Price, H. [1 ]
机构：
[1] UCL, Dept Phys & Astron, London WC1E 6BT, England
[2] Univ Massachusetts, Dept Chem, Amherst, MA 01003 USA
来源：
PHYSICAL REVIEW A | 2013年 / 87卷 / 04期
基金：
英国工程与自然科学研究理事会;
关键词：
TRIPLE PHOTOIONIZATION; CHARGE-TRANSFER; IONIZATION; DELAY; ATOMS;
D O I：
10.1103/PhysRevA.87.043428
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We explore the escape geometry of four electrons a few eV above threshold following single-photon absorption from the ground state of Be. We find that the four electrons leave the atom on the vertices of a triangular pyramid instead of a previously predicted regular tetrahedron. To illustrate the physical mechanisms of quadruple ionization we use a momentum transferring attosecond collision scheme which we show to be in accord with the triangular pyramid breakup pattern.
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页数：5
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