Publication at Faculty of Mathematics and Physics |
2011
Abstract
Novel flowing afterglow apparatus (Cryo-FALP) for studying elementary processes in plasma in the temperature range 40-200 K was designed and built. Presented is study of Collisional Radiative Recombination (CRR) of Ar+ ions with electrons in helium-buffered afterglow at electron densities 108-1010 cm-3 and at temperatures 50-200 K.
The obtained ternary recombination rate coefficient KCRR(77 K) = = (1.2 +- 0.6) x 10-17 cm6s-1. The observed temperature dependence agrees well with theoretical T -4.5 prediction.
It is the first time the KCRR was measured below 77 K.