Elliptic and circular dichroism effects in two-photon double ionization of atoms

被引:25
作者
Istomin, Andrei Y. [1 ]
Pronin, E. A.
Manakov, N. L.
Marmo, S. I.
Starace, Anthony F.
机构
[1] Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA
[2] Voronezh State Univ, Dept Phys, Voronezh 394006, Russia
关键词
D O I
10.1103/PhysRevLett.97.123002
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
An ab initio parametrization of the two-photon double ionization amplitude from an s(2) subshell of an atom in a S-1 state is presented and used to predict two light polarization effects on photoelectron angular distributions that do not exist in single-photon double ionization: (i) elliptic dichroism and (ii) circular dichroism at equal energy sharing. Estimates for He show large magnitudes for these effects, which provide a means for polarization control of double ionization by vacuum ultraviolet light.
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页数:4
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