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Shuman NS, Miller TM, Johnsen R, et al. Mutual neutralization of atomic rare-gas cations (Ne(+), Ar(+), Kr(+), Xe(+)) with atomic halide anions (Cl(-), Br(-), I(-)). J Chem Phys. 2014;140(4):044304doi: 10.1063/1.4862151.
Shuman, N. S., Miller, T. M., Johnsen, R., & Viggiano, A. A. (2014). Mutual neutralization of atomic rare-gas cations (Ne(+), Ar(+), Kr(+), Xe(+)) with atomic halide anions (Cl(-), Br(-), I(-)). The Journal of chemical physics, 140(4), 044304. https://doi.org/10.1063/1.4862151
Shuman, Nicholas S, et al. "Mutual neutralization of atomic rare-gas cations (Ne(+), Ar(+), Kr(+), Xe(+)) with atomic halide anions (Cl(-), Br(-), I(-))." The Journal of chemical physics vol. 140,4 (2014): 044304. doi: https://doi.org/10.1063/1.4862151
Shuman NS, Miller TM, Johnsen R, Viggiano AA. Mutual neutralization of atomic rare-gas cations (Ne(+), Ar(+), Kr(+), Xe(+)) with atomic halide anions (Cl(-), Br(-), I(-)). J Chem Phys. 2014 Jan 28;140(4):044304. doi: 10.1063/1.4862151. PMID: 25669520.
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J Chem Phys. 2014 Jan 28;140(4):044304. doi: 10.1063/1.4862151.

Mutual neutralization of atomic rare-gas cations (Ne(+), Ar(+), Kr(+), Xe(+)) with atomic halide anions (Cl(-), Br(-), I(-)).

The Journal of chemical physics

Nicholas S Shuman, Thomas M Miller, Rainer Johnsen, Albert A Viggiano

Affiliations

  1. Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA.
  2. Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.

PMID: 25669520 DOI: 10.1063/1.4862151

Abstract

We report thermal rate coefficients for 12 reactions of rare gas cations (Ne(+), Ar(+), Kr(+), Xe(+)) with halide anions (Cl(-), Br(-), I(-)), comprising both mutual neutralization (MN) and transfer ionization. No rate coefficients have been previously reported for these reactions; however, the development of the Variable Electron and Neutral Density Attachment Mass Spectrometry technique makes it possible to measure the difference of the rate coefficients for pairs of parallel reactions in a Flowing Afterglow-Langmuir Probe apparatus. Measurements of 18 such combinations of competing reaction pairs yield an over-determined data set from which a consistent set of rate coefficients of the 12 MN reactions can be deduced. Unlike rate coefficients of MN reactions involving at least one polyatomic ion, which vary by at most a factor of ∼3, those of the atom-atom reactions vary by at least a factor 60 depending on the species. It is found that the rate coefficients involving light rare-gas ions are larger than those for the heavier rare-gas ions, but the opposite trend is observed in the progression from Cl(-) to I(-). The largest rate coefficient is 6.5 × 10(-8) cm(3) s(-1) for Ne(+) with I(-). Rate coefficients for Ar(+), Kr(+), and Xe(+) reacting with Br2 (-) are also reported.

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