Near thermal charge transfer between Ar+2 and N2

15 February 1981

journal article
Published by AIP Publishing in The Journal of Chemical Physics

Vol. 74 (4) , 2313-2318
https://doi.org/10.1063/1.441348

Abstract

The near thermal charge transfer reaction of Ar+2 with N2 has been studied at total pressures below 10−7 Torr using a stored ion technique. Ar+2 ions produced by electron impact double ionization of Ar gas were selectively stored for times the order of seconds in a split-ring Penning-type ion trap. The decay with time of the initial ion sample number in a mixture of Ar and N2 gases was fit to the sum of two exponentials, corresponding to different reaction rates for the 3P and 1D low-lying Ar+2 levels. The observed Ar+2 number decrease is attributed to the double-charge transfer process Ar+2+N2→Ar+N2+2→Ar+N++N+ in accord with recent flow-tube measurements. A rate constant for the metastable Ar+2 (1D) level reaction with a value k(1D)=1.4×10−9 cm3/sec is obtained, using the previously measured rate constant for the Ar+2(3P) state.

Keywords

This publication has 16 references indexed in Scilit:

Some reactions of Ar2+ with atoms and molecules at 300 K
International Journal of Mass Spectrometry and Ion Physics, 1979
Reactions of Ar2+(3P) with CH4,C2H2 and NO2, of Ar2+(1S) with H2, N2, O2 CO2, C2H2 and CH4 of Ar+ with CH4, and NO2
International Journal of Mass Spectrometry and Ion Physics, 1979
Thermal-energy charge transfer, quenching, and association reactions of doubly charged ions in the rare gases
Physical Review A, 1979
Single-charge transfer reactions of the ground and metastable states of Xe²⁺at 300K
Journal of Physics B: Atomic and Molecular Physics, 1979
Mobilities of doubly charged rare-gas ions in their parent gases
Physical Review A, 1978
Measurements of radiative charge-transfer reactions of doubly and singly charged rare-gas ions with rare-gas atoms at thermal energies
Physical Review A, 1978
Symmetric Resonance Double Charge Transfer in ${Kr}^{+ +}$ +Kr and ${Xe}^{+ +}$ +Xe Systems
Physical Review Letters, 1978
Cross-section measurements for electron- $H_{3}$ $O^{+}$ recombination
Physical Review A, 1976
On the reaction of protons with methane, ammonia, water and oxygen
Chemical Physics Letters, 1974
Polarization detection of trapped electrons via interaction with polarized atoms
The European Physical Journal A, 1971