Formation of HeH+ from positron interactions with H2 and He mixtures

Details Formation of HeH+ from positron interactions with H2 and He mixtures Formation of HeH+ from positron interactions with H2 and He mixtures

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997phrva..56.4373x&link_type=abstract

Physical Review A (Atomic, Molecular, and Optical Physics), Volume 56, Issue 6, December 1997, pp.R4373-R4376

Physics

3

Positronium, Muonium, Muonic Atoms And Molecules, Atomic Excitation And Ionization By Electron Impact, Atomic, Molecular, And Chemical, And Grain Processes

Scientific paper

We have observed the production of HeH+ ions by the bombardment of gaseous mixtures of H2 and He with slow positrons and measured its dependence on the positron energy. The formation is believed to involve vibrational excitation of H+2 via positronium formation, followed by proton transfer from H+2 to He. The significance of these results with respect to astrophysics is discussed.

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