Study of the electron ion recombination in high pressure flowing afterglow:: recombination of NH+4• (NH3)2

Rate coefficients for the dissociative recombination of O-2(+) and NH4+ (NH3)(2) with electrons have been measured using the high pressure flowing afterglow (HPFA) technique. The electron energy distribution function, effective temperature, and electron number density of the recombination dominated plasma have been measured by a Langmuir probe at pressures up to 11 Torr. The measured value of the recombination rate coefficient of O-2(+) was used for validation of the Langmuir probe measurements at medium pressures. It is found that the recombination rate coefficient of the recombination of the cluster NH4+. (NH3)(2) ion is 1.4 x 10(-6) cm(3) s(-1) at 600 K. (Int J Mass Spectrom 189 (1999) 103-113) (C) 1999 Elsevier Science B.V.