Production and ion-ion cooling of highly charged ions in electron string ion source

The scheme of an internal injection of Au atoms into the working space of the “Krion-2” electron string ion source (ESIS) was applied and tested. In this scheme Au atoms are evaporated from the thin tungsten wire surface in vicinity of the source electron string. Ion beams with charge states up to A...

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Bibliographic Details
Published in:Review of scientific instruments 2009-06, Vol.80 (6), p.063304-063304
Main Authors: Donets, D. E., Donets, E. D., Donets, E. E., Salnikov, V. V., Shutov, V. B., Syresin, E. M.
Format: Article
Language:English
Subjects:
CHARGE STATES
COOLING
ELECTRONS
GOLD
GOLD IONS
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ION BEAMS
ION SOURCES
KEV RANGE
MULTICHARGED IONS
PARTICLE ACCELERATORS
TUNGSTEN
WIRES
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Summary:The scheme of an internal injection of Au atoms into the working space of the “Krion-2” electron string ion source (ESIS) was applied and tested. In this scheme Au atoms are evaporated from the thin tungsten wire surface in vicinity of the source electron string. Ion beams with charge states up to Au 51 + were produced. Ion-ion cooling with use of C and O coolant ions was studied. It allowed increasing of the Au 51 + ion yield by a factor of 2. Ions of Kr up to charge state 28 + were also produced in the source. Electron strings were first formed with injection electron energy up to 6 keV. Methods to increase the ESIS ion output are discussed.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.3152336