title: Li+ alumino-silicate ion source development for the neutralized drift compression experiment.
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/cm(2) 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.
authors.affiliation: Lawrence Berkeley National Laboratory, California 94720, USA. PKRoy@lbl.gov
authors.forename: Prabir K
authors.initials: PK
authors.lastname: Roy
authors.forename: Wayne G
authors.initials: WG
authors.lastname: Greenway
authors.forename: Joe W
authors.initials: JW
authors.lastname: Kwan
authors.forename: Peter A
authors.initials: PA
authors.lastname: Seidl
authors.forename: William L
authors.initials: WL
authors.lastname: Waldron
authors.forename: James K
authors.initials: JK
authors.lastname: Wu