Actions for Source fabrication and lifetime for Li+ ion beams extracted from alumino-silicate sources [electronic resource].

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Source fabrication and lifetime for Li+ ion beams extracted from alumino-silicate sources [electronic resource].

Published
Berkeley, Calif. : Lawrence Berkeley National Laboratory, 2012.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
6 : digital, PDF file
Additional Creators
Lawrence Berkeley National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
A space-charge-limited beam with current densities (J) exceeding 1 mA/cm² have been measured from lithium alumino-silicate ion sources at a temperature of ~1275° C. At higher extraction voltages, the source appears to become emission limited with J ≥ 1.5 mA/cm², and J increases weakly with the applied voltage. A 6.35 mm diameter source with an alumino-silicate coating, ≤0.25 mm thick, has a measured lifetime of ~40 hours at ~1275° C, when pulsed at 0.05 Hz and with pulse length of ~6 μs each. At this rate, the source lifetime was independent of the actual beam charge extracted due to the loss of neutral atoms at high temperature. The source lifetime increases with the amount of alumino-silicate coated on the emitting surface, and may also be further extended if the temperature is reduced between pulses.
Report Numbers
E 1.99:lbnl-5405e
lbnl-5405e
Subject(s)
Note
Published through SciTech Connect.
03/05/2012.
"lbnl-5405e"
Review of Scientific Instruments 83 FT
Roy, Prabir K.; Greenway, Wayne G.; Kwan, Joe W.
Accelerator&
Fusion Research Division
Funding Information
DE-AC02-05CH11231
View MARC record | catkey: 13820346