Electron-photon polarisation correlations in 140 eV electron impact excitation of helium |
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Authors: | M A Khakoo J W Mc Conkey |
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Institution: | 1. Department of Physics, University of Windsor, Windsor, Ontario, Canada
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Abstract: | Electron-polarised photon coincidence techniques are used to determine linear and circular polarisation correlations from the differential electron impact excitation of the 21 P state of helium at an incident electron energy of 140 eV. At 30° and 45° electron scattering angles, all the Stokes parameters are determined, whereas at 52.5° onlyP 2 is measured. Comparisons are made with the distorted wave (DW) calculations of Madison 11] and the first order many-body theory (FOMBT) of Cartwright and Csanak 4]. |
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