title: Binary and ternary recombination of H2D(+) and HD2(+) ions with electrons at 80 K.
abstract: The recombination of deuterated trihydrogen cations with electrons has been studied in afterglow plasmas containing mixtures of helium, argon, hydrogen and deuterium. By monitoring the fractional abundances of H3(+), H2D(+), HD2(+) and D3(+) as a function of the [D2]/[H2] ratio using infrared absorption observed in a cavity ring down absorption spectrometer (CRDS), it was possible to deduce effective recombination rate coefficients for H2D(+) and HD2(+) ions at a temperature of 80 K. From pressure dependences of the measured effective recombination rate coefficients the binary and the ternary recombination rate coefficients for both ions have been determined. The inferred binary and ternary recombination rate coefficients are: αbinH2D(80 K) = (7.1 ± 4.2) × 10(-8) cm(3) s(-1), αbinHD2(80 K) = (8.7 ± 2.5) × 10(-8) cm(3) s(-1), KH2D(80 K) = (1.1 ± 0.6) × 10(-25) cm(6) s(-1) and KHD2(80 K) = (1.5 ± 0.4) × 10(-25) cm(6) s(-1).
authors: Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University in Prague, Prague, Czech Republic. juraj.glosik@mff.cuni.cz.
authors: Petr
authors: P
authors: Dohnal
authors: Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University in Prague, Prague, Czech Republic. juraj.glosik@mff.cuni.cz.
authors: Ábel
authors: Á
authors: Kálosi
authors: Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University in Prague, Prague, Czech Republic. juraj.glosik@mff.cuni.cz.
authors: Radek
authors: R
authors: Plašil
authors: Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University in Prague, Prague, Czech Republic. juraj.glosik@mff.cuni.cz.
authors: Štěpán
authors: Š
authors: Roučka
authors: Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University in Prague, Prague, Czech Republic. juraj.glosik@mff.cuni.cz.
authors: Artem
authors: A
authors: Kovalenko
authors: Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University in Prague, Prague, Czech Republic. juraj.glosik@mff.cuni.cz.
authors: Serhiy
authors: S
authors: Rednyk
authors: Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
authors: Rainer
authors: R
authors: Johnsen
authors: Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University in Prague, Prague, Czech Republic. juraj.glosik@mff.cuni.cz.
authors: Juraj
authors: J
authors: Glosík