A hollow cathode ion source as an electron-beam ion source injector for metallic elements

Visentin, B.; Harrault, F.; Gobin, R.; Leroy, P. A.
April 1994
Review of Scientific Instruments;Apr94, Vol. 65 Issue 4, p1129
Academic Journal
A hollow cathode ion source (HCIS) has been developed in our Laboratory to produce, by cathodic sputtering in a glow discharge, a one charge metallic ion beam. This source is used as an injector for the electron-beam ion source (EBIS) Dioné that produce, after ion stripping, a highly charged heavy-ion beam for acceleration in Mimas-Saturne synchrotrons. Due to the good pulse-to-pulse repeatability of the HCIS, the very long lifetime of the cathode (several months), as well as the very good value of the normalized emittance (∈[sub norm]=4×10[sup -9] π mrad), this source appears as an ideal EBIS injector for metallic and gaseous elements. In this paper we report the description of the HCIS and the experimental results achieved, after injection in the EBIS, by the production of heavy-ion beams like Fe[sup 20+], Au[sup 50+], and U[sup 55+] (from 4×10[sup 7] to 9×10[sup 6] ions/cycle).


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