Department of Surface and Plasma Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, Praha 18000, Czech Republic
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.
(Received April 14 2011)
(Revised July 26 2011)
(Accepted August 25 2011)
(Online publication October 28 2011)