Abstract
In this work we report resonance parameters in electron-hydrogen scattering converging on the N-italic = 4, 5, and 6 hydrogenic thresholds. Results are calculated by a method of complex coordinate rotation. Hylleraas-type wave functions are used for L-italic = 0 and L-italic = 1 resonances, and products of Slater orbitals for states with L-italic> or =2. Both states with parities (-1)/sup L-italic/ and (-1)/sup L-italic//sup +1/ are calculated. All the intrashell resonances (both electrons occupying the same shell) below the respective thresholds are included in this work with approximate quantum numbers K-italic and T-italic assigned to each state. Results are used to construct ''supermultiplet'' structures of the doubly excited resonances of hydrogen negative ions.
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