No abstract

No abstract

No abstract

The angular disbibution of photwlectrons produced by excitation of polarized atoms to autoionizing states is analysed. In particular. core-excited nutoionizing states produced in absorption of synchrotron radiation by laser-pumped excited atoms are considered. A general expression for the angular distribtltion of arbiharily oriented laser and synchrotron beams is obtained and further reduced to a simpler form for a micular geomemy used in experiments. A case of an isolated autoionizing state (resonance) interacting with several continua is considered and parametrization of the observable parameters in the region of the resonance is discussed. Peculiarities of the circular dichroism in the region of autoionizing resonances are analysed. Formulae suitable for particular resonances with J < are presented and d p m t e r s necessary for analysis of experimental angular distributions are tabulated. As examples, excitations of autoionizing 2ps3s3p and 7.~38 states in Na and 3p53d4s4p states in Ca are considered. Theoretical angular distributions are compared with recent experimental data.

No abstract