The 4He+ ion population decay under different Ar pressures (a) and the corresponding decay rates plotted against Ar number densities (b)

2013-09-06T00:00:00Z (GMT) by C Kyriakides B S Clarke V H S Kwong

Figure A4. The 4He+ ion population decay under different Ar pressures (a) and the corresponding decay rates plotted against Ar number densities (b). The rate coefficient from (b) is used to determine the ECIL rate coefficients of 3He2 +–N2 and 3He2 +–CO.

Abstract

We report our measured values for the sum of single and double charge transfer rate coefficients between 3He2 + and H2, CH4, N2 and CO. Our values are 2.4 ± 0.2 × 10−9 cm3 s−1 for H2, 6.3 ± 0.9 × 10−9 cm3 s−1 for CH4, 4.0 ± 0.3 × 10−9 cm3 s−1 for N2 and 4.7 ± 0.4 × 10−9 cm3 s−1 for CO. The values are obtained at equivalent temperatures of 1200–2400 K.