Binary recombination of para- and ortho-H 3 + with electrons at low temperatures

Author:

Dohnal P.1,Hejduk M.1,Varju J.1,Rubovič P.1,Roučka Š.1,Kotrík T.1,Plašil R.1,Johnsen R.2,Glosík J.1

Affiliation:

1. Faculty of Mathematics and Physics, Department of Surface and Plasma Science, Charles University, Prague, Czech Republic

2. Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA

Abstract

Results of an experimental study of binary recombination of para- and ortho- ions with electrons are presented. Near-infrared cavity-ring-down absorption spectroscopy was used to probe the lowest rotational states of ions in the temperature range of 77–200 K in an -dominated afterglow plasma. By changing the para/ortho abundance ratio, we were able to obtain the binary recombination rate coefficients for pure and . The results are in good agreement with previous theoretical predictions.

Publisher

The Royal Society

Subject

General Physics and Astronomy,General Engineering,General Mathematics

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