Extraction of volume‐produced H− ions from a multicusp source
作者： K. N. Leung , K. W. Ehlers , M. Bacal
DOI: 10.1063/1.1137215
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摘要: H− ions formed by volume processes are extracted from a multicusp ion source. It is shown that permanent magnet filter together with small positive bias voltage on the plasma grid can produce very significant reduction in electron drain as well sizable increase available for extraction. A further current achieved installing pair of ceramic magnets at extraction aperture. The combined arrangement improves ratio to about unity.
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K. W. Ehlers, K. N. Leung, Characteristics of the Berkeley multicusp ion source Review of Scientific Instruments. ,vol. 50, pp. 1353- 1361 ,(1979) , 10.1063/1.1135725
F. H. Coensgen, W. F. Cummins, C. Gormezano, B. G. Logan, A. W. Molvik, W. E. Nexsen, T. C. Simonen, B. W. Stallard, W. C. Turner, Startup of a Neutral-Beam-Sustained Plasma in a Quasi-dc Magnetic Field Physical Review Letters. ,vol. 37, pp. 143- 146 ,(1976) , 10.1103/PHYSREVLETT.37.143
K. W. Ehlers, K. N. Leung, M. D. Williams, A mass spectrometer for analyzing hydrogen‐ion species Review of Scientific Instruments. ,vol. 50, pp. 1031- 1033 ,(1979) , 10.1063/1.1135973
M. Bacal, G. W. Hamilton, H - and D - Production in Plasmas Physical Review Letters. ,vol. 42, pp. 1538- 1540 ,(1979) , 10.1103/PHYSREVLETT.42.1538
J. R. Hiskes, A. M. Karo, M. Bacal, A. M. Bruneteau, W. G. Graham, Hydrogen vibrational population distributions and negative ion concentrations in a medium density hydrogen discharge Journal of Applied Physics. ,vol. 53, pp. 3469- 3475 ,(1982) , 10.1063/1.331166
B Peart, R A Forrest, K Dolder, Measured cross sections for the formation of H- by collisions between H3+ ions and electrons Journal of Physics B. ,vol. 12, pp. 3441- 3443 ,(1979) , 10.1088/0022-3700/12/20/021
K. N. Leung, K. W. Ehlers, H− ion formation from a surface conversion type ion source Journal of Applied Physics. ,vol. 52, pp. 3905- 3911 ,(1981) , 10.1063/1.329239
K.H. Berkner, R.V Pyle, J.W Stearns, Intense, mixed-energy hydrogen beams for CTR injection Nuclear Fusion. ,vol. 15, pp. 249- 254 ,(1975) , 10.1088/0029-5515/15/2/009
B Peart, K T Dolder, Collisions between electrons and H2+ ions VI. Measurements of cross sections for the simultaneous production of H+ and H- Journal of Physics B. ,vol. 8, pp. 1570- 1574 ,(1975) , 10.1088/0022-3700/8/9/023
J. R. Hiskes, Formation of hydrogen negative ions by surface and volume processes with application to negative ion sources Le Journal de Physique Colloques. ,vol. 40, pp. C7- 179 ,(1979) , 10.1051/JPHYSCOL:19797439