Accession Number : AD0618547

Title :   THE REACTION OF THE HD(+) ION WITH VARIOUS RARE GASES.

Descriptive Note : Doctoral thesis,

Corporate Author : JOHNS HOPKINS UNIV BALTIMORE MD

Personal Author(s) : Berta,Michael A.

Report Date : 1965

Pagination or Media Count : 131

Abstract : The reactions X + HD(+) yields XH(+) + D, X + HD(+) yields XD(+) + H; where X is He, Ne, Ar, and Kr, were studied in a two-stage mass spectrometer. In these mass transfer reactions, attention was focused on the isotope effect and the XH(+)/XD(+) ratio was determined as a function of the kinetic energy of the HD(+) ion in the range 2 to 20 eV. The results were interpreted in terms of complex formation and the conservation of energy and angular momentum. A model is proposed for modifying ion molecule reaction theory to account for the phenomenon in HD(+) where the centerof-mass is not at the center of the bond and the diatomic possesses a rotation about the center-of-mass. This modification produces an energy dependent isotope effect which correlates well with the experimental data. The charge transfer reaction X + HD(+) yields X(+) + HD was also observed in the Ar and Kr studies. The results are compatible with Massey's 'adiabatic' hypothesis. (Author)

Descriptors :   (*DEUTERIUM COMPOUNDS, CHEMICAL REACTIONS), (*RARE GASES, CHEMICAL REACTIONS), (*MASS SPECTROSCOPY, RARE GASES), ISOTOPES, THERMOCHEMISTRY, HELIUM, NEON, ARGON, KRYPTON, COMPLEX COMPOUNDS, IONS, EXCITATION, PROBABILITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE