The European Physical Journal Applied Physics

Table of Contents - November 2011 - Volume 56, Issue 02 (Topical Issue: 18th International Colloquium on Plasma Processes (CIP 2011))  

Research Article

Cryo-FALP study of collisional-radiative recombination of Ar+ ions at 40–200 K

T. Kotríka1 c1, P. Dohnala1, P. Ruboviča1, R. Plašila1, Š. Roučkaa1, S. Opanasiuka1 and J. Glosíka1

Department of Surface and Plasma Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, Praha 18000, Czech Republic

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 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)

Correspondence:

c1 e-mail: kotrik.tomas@gmail.com