The influence of the extraction voltage on the energetic electron population of an electron cyclotron resonance ion source plasma

K E Stiebing; L Schächter; S Dobrescu

doi:10.1063/1.3670343

The influence of the extraction voltage on the energetic electron population of an electron cyclotron resonance ion source plasma

Rev Sci Instrum. 2012 Feb;83(2):02A331. doi: 10.1063/1.3670343.

Authors

K E Stiebing¹, L Schächter, S Dobrescu

Affiliation

¹ Institut für Kernphysik der J. W. Goethe-Universität, Frankfurt∕Main, Germany. stiebing@em.uni-frankfurt.de

PMID: 22380178
DOI: 10.1063/1.3670343

Abstract

An influence of the extraction voltage on the high energy slope of bremsstrahlung radiation spectra has been reported in ECRIS experiments, which is not well understood so far. In order to provide more detailed data on this effect, we have measured bremsstrahlung radiation spectra accompanying especially the evolution of highly charge ions (i.e., by monitoring the Ar(14+) charge state) as the extraction voltage is changed from 0 to 20 kV, in dedicated experiments at the Frankfurt 14 GHz-ECRIS.