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Magnetically insulated helium ion diode
Abstract
A gas-puff magnetically insulated ion diode is under development as a pulsed source of high-energy alpha particles for magnetic fusion experiments. The diode is patterned after the Cornell gas-puff diode [J. B. Greenly, M. Ueda, G. D. Rondeau, and D. A. Hammer, J. Appl. Phys. 63, 1872 (1988)], but with modifications to accomodate higher voltages (<1 MeV) and operation in helium. The diode is designed to yield current densities approaching 200 A/cm 2 one meter downstream from the source; in our first test of the new source, a helium beam was obtained.
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