Demonstration of charge breeding in a compact room temperature electron beam ion trap

G Vorobjev; A Sokolov; A Thorn; F Herfurth; O Kester; W Quint; Th Stöhlker; G Zschornack

doi:10.1063/1.4719668

Demonstration of charge breeding in a compact room temperature electron beam ion trap

Rev Sci Instrum. 2012 May;83(5):053302. doi: 10.1063/1.4719668.

Authors

G Vorobjev¹, A Sokolov, A Thorn, F Herfurth, O Kester, W Quint, Th Stöhlker, G Zschornack

Affiliation

¹ GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, Germany. [email protected]

PMID: 22667612
DOI: 10.1063/1.4719668

Abstract

For the first time, a small room-temperature electron beam ion trap (EBIT), operated with permanent magnets, was successfully used for charge breeding experiments. The relatively low magnetic field of this EBIT does not contribute to the capture of the ions; single-charged ions are only caught by the space charge potential of the electron beam. An over-barrier injection method was used to fill the EBIT's electrostatic trap with externally produced, single-charged potassium ions. Charge states as high as K(19+) were reached after about a 3 s breeding time. The capture and breeding efficiencies up to 0.016(4)% for K(17+) have been measured.