Abstract
Singly and doubly charged xenon ions have been generated by electron impact of xenon gas in the cylindrical cell of a Bruker CMS 47X Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer. Subsequently, xenon ions with a particular mass and charge state have been selected by ejection of all other ions from the FT-ICR cell and allowed to react with neutral xenon atoms.The rate coefficient for the charge transfer reaction (1)136Xe+· + Xe → 136Xe + Xe+· (1)has been determined to be 2.5 × 10−10 cm3 s−1, which agrees very well with values reported in the literature. In the interactions between Xe2+ ions and neutral xenon atoms not only a single electron transfer [reaction (2a)], but also a double electron transfer [reaction (2b)] is observed.136Xe2+ + Xe → 136Xe+· + Xe+· (2a)136Xe2+ + Xe → 136Xe + Xe2+ (2b)The overall rate coefficient for the charge transfer reaction [(2a) + (2b)] has been measured to be 2.7 × 10−10 cm3 s−1. From this and the branching ratio of 0.8 between reactions (2a) and (2b) the rate coefficients for single and double electron transfer from Xe to Xe2+ have been calculated to be 1.2 × 10−10 cm3 s−1 and 1.5 × 10−10 cm3 s−1, respectively.
Published Version
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