TITLE

Li+ alumino-silicate ion source development for the neutralized drift compression experiment

AUTHOR(S)
Roy, Prabir K.; Greenway, Wayne G.; Kwan, Joe W.; Seidl, Peter A.; Waldron, William L.; Wu, James K.
PUB. DATE
January 2011
SOURCE
Review of Scientific Instruments;Jan2011, Vol. 82 Issue 1, p013304
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report results on lithium alumino-silicate ion source development in preparation for warm dense matter heating experiments on the new neutralized drift compression experiment II. The practical limit to the current density for a lithium alumino-silicate source is determined by the maximum operating temperature that the ion source can withstand before running into problems of heat transfer, melting of the alumino-silicate material, and emission lifetime. Using small prototype emitters, at a temperature of ≈1275 °C, a space-charge limited Li+ beam current density of J ≈1 mA/cm2 was obtained. The lifetime of the ion source was ≈50 h while pulsing at a rate of 0.033 Hz with a pulse duration of 5-6 μs.
ACCESSION #
57679719

 

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