Development of large radio frequency driven negative ion sources for fusion

Authors
Vollmer, O Falter, H Frank, P Heinemann, B Kraus, W Massmann, P McNeely, P Riedl, R Speth, E Trainham, R Wilhelm, R
Citation
O. Vollmer et al., Development of large radio frequency driven negative ion sources for fusion, REV SCI INS, 71(2), 2000, pp. 939-942
Citations number
7
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
REVIEW OF SCIENTIFIC INSTRUMENTS
ISSN journal
00346748 → ACNP
Volume
71
Issue
2
Year of publication
2000
Part
2
Pages
939 - 942
Database
ISI
SICI code
0034-6748(200002)71:2<939:DOLRFD>2.0.ZU;2-1
Abstract
A new large area, high power rf source for negative ion beam systems has be en developed. The source operates very reliably and has the potential for l ong pulse operation. Current densities up to 15 mA/cm(2) could be extracted with a cold plasma grid at 0.65 Pa source pressure. By pure volume product ion 9 mA/cm(2) current density at the same pressure level has been achieved with the addition of argon to the source operating gas. (C) 2000 American Institute of Physics. [S0034-6748(00)53402-9].