Ionization of polarized hydrogen atoms

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Methods are discussed for the production of polarized H/sup -/ ions from polarized atoms produced in ground state atomic beam sources. Present day sources use ionizers of two basic types - electron ionizers for H/sup +/ Vector production followed by double charge exchange in a vapor, or direct H/sup -/ Vector production by charge exchange of H/sup 0/ with Cs/sup 0/. Both methods have ionization efficiencies of less than 0.5%. Ionization efficiencies in excess of 10% may be obtained in the future by the use of a plasma ionizer plus charge exchange in Cs or Sr vapor, or ionization by ... continued below

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Pages: 14

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Alessi, J.G. January 1, 1983.

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Methods are discussed for the production of polarized H/sup -/ ions from polarized atoms produced in ground state atomic beam sources. Present day sources use ionizers of two basic types - electron ionizers for H/sup +/ Vector production followed by double charge exchange in a vapor, or direct H/sup -/ Vector production by charge exchange of H/sup 0/ with Cs/sup 0/. Both methods have ionization efficiencies of less than 0.5%. Ionization efficiencies in excess of 10% may be obtained in the future by the use of a plasma ionizer plus charge exchange in Cs or Sr vapor, or ionization by resonant charge exchange with a self-extracted D/sup -/ beam from a ring magnetron or HCD source. 36 references, 4 figures.

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Pages: 14

Notes

NTIS, PC A02/MF A01.

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  • 3. international symposium on the production and neutralization of negative ions and beams, Upton, NY, USA, 14 Nov 1983

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  • Other: DE84007378
  • Report No.: BNL-34235
  • Report No.: CONF-831180-23
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 5215104
  • Archival Resource Key: ark:/67531/metadc1065168

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • January 1, 1983

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

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  • April 23, 2018, 4:26 p.m.

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Alessi, J.G. Ionization of polarized hydrogen atoms, article, January 1, 1983; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc1065168/: accessed April 27, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.