H/sup -/ ion source diagnostics

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Electrostatic probe measurements, H/sub ..cap alpha../ line broadening, and gas pressure and gas flow measurements are discussed with regard to the Brookhaven National Laboratory H/sup -/ ion source. Probe measurements imply the plasma density and electron temperature for certain source conditions. Line broadening experiments indicate an atom temperature of several tenths of an eV. The importance of fine structure splitting in analyzing the line profiles is discussed and the H/sub ..cap alpha../ line is studied in detail. The determination of the fast neutral particle energy is discussed. Gas flow measurements indicate near molecular flow for the operating ion source pressure ... continued below

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Pages: 6

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Grossman, M.W. January 1, 1977.

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Description

Electrostatic probe measurements, H/sub ..cap alpha../ line broadening, and gas pressure and gas flow measurements are discussed with regard to the Brookhaven National Laboratory H/sup -/ ion source. Probe measurements imply the plasma density and electron temperature for certain source conditions. Line broadening experiments indicate an atom temperature of several tenths of an eV. The importance of fine structure splitting in analyzing the line profiles is discussed and the H/sub ..cap alpha../ line is studied in detail. The determination of the fast neutral particle energy is discussed. Gas flow measurements indicate near molecular flow for the operating ion source pressure without a discharge. In the presence of a discharge, calculations assert that the gas flow, pressure and density will change during the discharge. Preliminary experiments also indicate a possible decrease in the gas flow during the discharge.

Physical Description

Pages: 6

Notes

Dep. NTIS, PC A02/MF A01.

Source

  • Symposium on the production and neutralization of negative hydrogen ions and beams, Upton, NY, USA, 26 Sep 1977

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  • Report No.: BNL-23649
  • Report No.: CONF-770940-17
  • Grant Number: EY-76-C-02-0016
  • Office of Scientific & Technical Information Report Number: 5228606
  • Archival Resource Key: ark:/67531/metadc1064309

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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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Creation Date

  • January 1, 1977

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

Description Last Updated

  • April 20, 2018, 6:51 p.m.

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Grossman, M.W. H/sup -/ ion source diagnostics, article, January 1, 1977; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc1064309/: accessed May 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.