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Threshold law for the triplet state for electron-impact ionization in the Temkin-Poet model

1997; American Physical Society; Volume: 55; Issue: 4 Linguagem: Inglês

10.1103/physreva.55.3250

1538-4446

W. Ihra, F. Mota-Furtado, P. F. O’Mahony, J. H. Macek,

Cold Atom Physics and Bose-Einstein Condensates

We derive the analytical threshold behavior for the triplet cross section for electron-impact ionization in the Temkin-Poet model. The analytical results indicate that the most recent numerical calculations may fail to reproduce the correct threshold behavior in an energy regime below about E=0.1 a.u. We also present an analytical expression for the energy distribution of the two electrons near threshold.