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The interaction of metastable Ne(3s3P2,3P0) atoms with alkali atoms

Research paper by J. Lorenzen, H. Hotop, M. -W. Ruf

Indexed on: 01 Sep '86Published on: 01 Sep '86Published in: Zeitschrift für Physik D Atoms, Molecules and Clusters



Abstract

Using crossed beams of alkali atoms (Li, Na, K) and state-selected metastable Ne(3s3P2,3P0) atoms, we have measured the energy spectra of electrons resulting in the respective Penning ionization processes at thermal collision energies. The spectra are very different for Ne(3P2) and Ne(3P0): those for Ne(3P2) are broad due to a strongly attractive interaction potential with a well depth of 798 (30) meV (Li), 672(20) meV (Na), and 561(20) meV (K), those for Ne(3P0) are narrow and compatible with van der Waals type attraction (well depth <50 meV). The Ne(3P2) cross section exceeds the one for Ne(3P0) by about an order of magnitude.