Angular correlation theory for double photoionization in a rare gas atom : ionization by polarized photons
Chiranjib Sur, Dipankar Chattarji
Abstract
This is a sequel to an earlier article on the theory of angular correlation for double photoionization. Here we consider the two-step double photoionization of a rare gas atom under the influence of a polarized photon beam described by appropriate Stokes parameters. Cylindrical mirror analysers (CMA) are used to detect the outgoing electrons. Theoretical values of the correlation functions are obtained for linearly polarized light. Two different situations is handled. Once, the value of the correlation function is obtained keeping the photo-electron in a fixed direction. The other case the direction of the Auger electron is kept fixed. Comparison with experiments on xenon shows excellent agreement for the case of (4d5/2) photoionization followed by a subsequent (N5-O23O23 1S0) Auger decay for a polarized incident photon of energy (94.5eV) [J. Phys.B,
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