Eur. Phys. J. Appl. Phys. 56, 24011 (2011)
https://doi.org/10.1051/epjap/2011110158

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

^a e-mail: kotrik.tomas@gmail.com

Received: 14 April 2011
Revised: 26 July 2011
Accepted: 25 August 2011
Published online: 28 October 2011

Abstract

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 K_CRR = (3 ± 1) × 10⁻¹⁷ cm⁶ s⁻¹. It is the first time that the K_CRR was measured below 77 K. The measured temperature dependence K_CRR ~ T^{(−4.5 ± 0.4)} is in a good agreement with theoretical prediction.