Elliptic and circular dichroism effects in two-photon double ionization of atoms |
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| Authors: | Istomin Andrei Y Pronin E A Manakov N L Marmo S I Starace Anthony F |
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| Institution: | Department of Physics and Astronomy, The University of Nebraska, Lincoln, NE 68588-0111, USA. |
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| Abstract: | An ab initio parametrization of the two-photon double ionization amplitude from an s2 subshell of an atom in a 1S 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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