Nuclear Spin Effect on Recombination of H3+ Ions with Electrons at 77 K

Details Nuclear Spin Effect on Recombination of H3+ Ions with Electrons at 77 K Nuclear Spin Effect on Recombination of H3+ Ions with Electrons at 77 K

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011phrvl.106t3201v&link_type=abstract

Physical Review Letters, vol. 106, Issue 20, id. 203201

Astronomy and Astrophysics

Astrophysics

1

Electron-Ion Recombination And Electron Attachment, Spin Dependence Of Cross Sections, Polarized Electron Beam Experiments, Laboratory Studies Of Space- And Astrophysical-Plasma Processes, Molecular And Chemical Processes And Interactions

Scientific paper

Utilizing different ratios of para to ortho H2 in normal and para enriched hydrogen, we varied the population of para-H3+ in an H3+ dominated plasma at 77 K. Absorption spectroscopy was used to measure the densities of the two lowest rotational states of H3+. Monitoring plasma decays at different populations of para-H3+ allowed us to determine the rate coefficients for binary recombination of H3+ and ortho-H3+ ions: αbinp(77K)=(1.9±0.4)×10-7cm3s-1 and αbino(77K)=(0.2±0.2)×10-7cm3s-1.

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