Rate Coefficients for H3^+ Production Measured in an RF Ion Trap

Details Rate Coefficients for H3^+ Production Measured in an RF Ion Trap Rate Coefficients for H3^+ Production Measured in an RF Ion Trap

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aps..ses.ha031r&link_type=abstract

American Physical Society, 75th Annual Meeting of the Southeastern Section of APS, October 30-November 1, 2008, abstract #HA.031

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Scientific paper

The reaction H2^+ + H2-> H3^+ + H is studied using a quadrupole radio frequency ion trap coupled with a time of flight mass spectrometer. Protonated molecular hydrogen is one of the most abundant ions in the universe, and is believed to be responsible for the formation of many molecular ions in, for example, the interstellar medium and the aurorae of Jupiter. Also, since this ion is the simplest polyatomic molecule, it can be used as a basis for comparison with other polyatomic molecules. H2^+ is created in a RF ion trap by electron bombardment of H2, and then allowed to react with H2 for varying time intervals before the H2^+ and H3^+ populations are ejected from the trap and detected with an active-film electron multiplier. A number of different experimental parameters (H2 pressure, trapping parameters and electron bombardment conditions) are explored and preliminary rate coefficients for the H2^+ + H2-> H3^+ + H reaction are presented.

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