Low-energy, electron-spin-polarized 4He+ ion source
Bixler, D. L. ; Lancaster, J. C. ; Popple, R. A. ; Dunning, F. B. ; Walters, G. K.
[S.l.] : American Institute of Physics (AIP)
Published 1998
[S.l.] : American Institute of Physics (AIP)
Published 1998
| ISSN: |
1089-7623
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|---|---|
| Source: |
AIP Digital Archive
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| Topics: |
Physics
Electrical Engineering, Measurement and Control Technology
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| Notes: |
A source of low-energy, electron-spin-polarized 4He+ ions based on an optically pumped, rf-excited helium discharge is described. Ion polarizations P+ of ∼0.13 are achieved at beam currents of ∼0.1 nA, decreasing to ∼0.09 at currents of ∼0.5 nA. Ion beam energies as low as 10 eV have been realized, with an energy spread of (approximately-less-than)3 eV full width half maximum. The ion polarization can be reversed (P+→−P+) simply by changing the sense of circular polarization of the optical pumping radiation. The source is suitable for use in a wide variety of applications including surface physics studies. © 1998 American Institute of Physics.
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| Type of Medium: |
Electronic Resource
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| URL: |