Electron scattering by atomic hydrogen using a pseudo-state expansion. IV. The convergence of the S-state expansion at intermediate energies
- 1 February 1973
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 6 (2) , 320-328
- https://doi.org/10.1088/0022-3700/6/2/015
Abstract
For pt. III see abstr. A1025 of 1971. The convergence of the pseudo-state expansion of the electron hydrogen atom system at intermediate energies is studied. The atomic 1s and 2s eigenstates as well as 3s, 4s and 5s pseudo-states are retained in the expansion and calculations in the singlet L=0 state are carried out over incident electron energies from 10.2 eV to 30.6 eV. The 1s-2s excitation cross section is found to converge rapidly, except in the region of certain non-physical resonances and this result is used to estimate the accuracy of earlier work using the pseudo-state expansion.Keywords
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