Binary recombination of para- and ortho-H3+ with electrons at low temperatures

• Published in: Philosophical transactions of the Royal Society of London. Series A: Mathematical, physical, and engineering sciences Vol. 370; no. 1978; pp. 5101 - 5108
• Main Authors: Dohnal, P., Hejduk, M., Varju, J., Rubovi, P., Rou ka, Š., Kotrík, T., Plašil, R., Johnsen, R., Glosík, J.
• Format: Journal Article
• Language: English
• Published: England The Royal Society Publishing 13-11-2012
• Subjects: Afterglow Plasma; Cavity Ring Down Spectroscopy; Dissociative Recombination; H3
• ISSN: 1364-503X; 1471-2962
• DOI: 10.1098/rsta.2012.0097

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.