Resonances in low-energy positron-alkali scattering

Details Resonances in low-energy positron-alkali scattering Resonances in low-energy positron-alkali scattering

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nascp3058..261h&link_type=abstract

In NASA, Goddard Space Flight Center, Annihilation in Gases and Galaxies, NASA CP-3058 p 261-262 (SEE N90-18957 11-70)

Physics

Alkali Metals, Coupling Coefficients, Electron Scattering, Positrons, Resonance, Atomic Collisions, Atomic Excitations, Phase Shift, Targets

Scientific paper

Close-coupling calculations were performed with up to five target states at energies in the excitation threshold region for positron scattering from Li, Na and K. Resonances were discovered in the L = 0, 1 and 2 channels in the vicinity of the atomic excitation thresholds. The widths of these resonances vary between 0.2 and 130 MeV. Evidence was found for the existence of positron-alkali bound states in all cases.

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