Extraction of H− and D− ions from a large magnetic multipole source

Autor:	A. J. T. Holmes, M. P. S. Nightingale, L. M. Lea, A. F. Newman
Rok vydání:	1987
Předmět:	Materials science Deuterium Physics::Plasma Physics Electric discharge Ion current Atomic physics Multipole expansion Instrumentation Current density Charged particle Ion source Ion
Zdroj:	Review of Scientific Instruments. 58:223-234
ISSN:	1089-7623 0034-6748
DOI:	10.1063/1.1139312
Popis:	Results are presented on the production of H− ions in a large (55×31×20 cm3) magnetic multipole discharge, which is sufficiently large to act as the plasma generator for a neutral beam injector. H− ion current densities up to 57 mA/cm2 have been extracted in pulses up to 3 s in length at low energies. When the discharge is operated in deuterium, a maximum D− current density of 27 mA/cm2 is obtained. The scaling laws of the H− production are consistent with production by dissociative attachment to rovibrationally excited molecules and loss by mutual recombination.
Databáze:	OpenAIRE
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