Cryo-FALP study of collisional-radiative recombination of Ar+ ions at 40–200 K
Department of Surface and Plasma Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, Praha 18000, Czech Republic
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Revised: 26 July 2011
Accepted: 25 August 2011
Published online: 28 October 2011
New flowing afterglow apparatus, Cryo-FALP, was built to study ternary Collisional-Radiative Recombination (CRR) of Ar+ ions with electrons in He/Ar afterglow plasma at temperatures 40–200 K. The obtained ternary recombination rate coefficient at 57 K is KCRR = (3 ± 1) × 10−17 cm6 s−1. It is the first time that the KCRR was measured below 77 K. The measured temperature dependence KCRR ~ T(−4.5 ± 0.4) is in a good agreement with theoretical prediction.
© EDP Sciences, 2011