Associative Ionization in Collisions between Metastable Helium and Atomic Nitrogen and Oxygen.

摘要

Absolute and relative cross sections were obtained for the associative ionization (AI) reactions He(*) + N yields HeN(+) + e and He(*) + O yields HeO(+) + e by a merging-beams technique from nominally 0.01 to 1.5 eV for the first reaction and 0.01 to 0.2 eV for the second. The He(*) represents a composite of He(2(1)5) and He(2(3)5), and the N and O represent composites of ground and metastable states. Although the observation of AI between two excited reactants is rare, evidence is presented for such an observation between excited He and excited N. (Author)