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Effect of a magnetic filter on hydrogen ion species in a multicusp ion source

Rev. Sci. Instrum. 52, 1452 (1981); doi:10.1063/1.1136474

Issue Date: October 1981

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K. W. Ehlers and K. N. Leung
Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
Hydrogen ion species and discharge characteristics have been compared for two different magnet geometries in a multicusp ion source. One magnet configuration indicated that the H<sub>2</sub><sup> + </sup> ion percentage in the extracted beam could be reduced by eliminating the high energy ionizing electrons near the ion extraction region. To accomplish this and maintain the desired features of both magnet geometries, a magnetic filter was installed near the source exit. With this combined arrangement, we found that the H+ ion percentage and discharge condition were much improved and a more uniform density profile across the extraction plane was achieved. The atomic species fraction can then be further enhanced by the addition of low-energy (~16 eV) primary electrons into the source plasma chamber. Review of Scientific Instruments is copyrighted by The American Institute of Physics.
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KEYWORDS and PACS

Keywords
PACS
  • 29.25.Cy
    Experimental methods and instrumentation for elementary-particle and nuclear physics Particle sources and targets; preparation and technology Ion sources: positive, negative, and polarized
  • 41.80.Gg
    Electricity and magnetism: fields and charged particles Particle beams and particle optics Ion beams and ion optics
  • YEAR: 1981

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PUBLICATION DATA

ISSN:
0034-6748 (print)   1089-7623 (online)
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REFERENCES (15)

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  1. R. Limpaecher and K. R. MacKenzie, Rev. Sci. Instrum. 44, 726 (1973).
  2. K. N. Leung, T. K. Samec, and A. Lamm, Phys. Lett. A 51, 490 (1975).
  3. Plasma Physics and Fusion Progress Report, Culham Lab. Report CLM-PR 20, 1978.
  4. W. L. Stirling, P. M. Ryan, C. C. Tsai, and K. N. Leung, Rev. Sci. Instrum. 50, 102 (1979).
  5. K. W. Ehlers and K. N. Leung, Rev. Sci. Instrum. 50, 1353 (1979).
  6. Japan Atomic Energy Research Institute Report JAERI-M 8869, 1980.
  7. J. Grando, H. Haseroth, C. Hill, M. Hone, Proceedings 1979 Linear Acc. Conf., Brookhaven, BNL-51134.
  8. R. Keller and N. Angert, Proceedings 1979 Linear Acc. Conf., Brookhaven, BNL-51134.
  9. K. W. Ehlers, K. N. Leung, and M. D. Williams, Rev. Sci. Instrum. 50, 1031 (1979).
  10. A. P. H. Goede and T. S. Green, 1979 8th Symp. on Engineering Problems of Fusion Research, San Francisco IEEE 79 CH1441-5NPS.
  11. K. N. Leung, G. R. Taylor, J. M. Barrick, S. L. Paul, and R. E. Kribel, Phys. Lett. A 57, 145 (1976).
  12. K. N. Leung, Proceedings of the Symposium on Production and Neutralization of Negative Hydrogen Ions and Beains (Brookhaven, Sept. 1977).
  13. K. W. Ehlers and K. N. Leung, Rev. Sci. Instrum. 51, 721 (1980).
  14. K. W. Ehlers and K. N. Leung, Appl. Phys. Lett. 38, 287 (1981).
  15. C. F. Barnett, J. A. Ray, E. Ricci, M. I. Wilker, E. W. McDaniel, E. W. Thomas, and H. B. Gilbody, “Atomic Data for Controlled Fusion Research,” ORNL-5207, p. C.3.2 (1977).

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