Mathematics
Scientific paper
Jun 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975phrva..11.2018b&link_type=abstract
Physical Review A - General Physics, 3rd Series, vol. 11, June 1975, p. 2018-2024.
Mathematics
148
Autoionization, Electron States, Gas Ionization, Helium Atoms, Hydrogen Ions, Operators (Mathematics), Angular Momentum, Anions, Electron Scattering, Photoabsorption, Projection, Resonance
Scientific paper
Improved calculations are reported for the first several autoionization states of the lower symmetries of He and H(-). Unshifted energies are calculated by diagonalizing QHQ using a Hylleraes basis with more terms than previously used; shifts, widths, and photoabsorption shape parameters are obtained with the additional use of exchange-approximate nonresonant continuum functions. Previous calculations of H(-) resonances are reviewed and slightly augmented by applying various nonresonant continua and correcting small errors. A comparison is made between the calculations and experimental results and is found to be very satisfactory except for the lowest 1P autoionization state of He, which is shown to need a more accurate experimental determination.
Bhatia Anand K.
Temkin A.
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