High ion charge states in a high-current, short-pulse, vacuum arc ion source

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Description

Ions of the cathode material are formed at vacuum arc cathode spots and extracted by a grid system. The ion charge states (typically 1--4) depend on the cathode material and only little on the discharge current as long as the current is low. Here the authors report on experiments with short pulses (several {micro}s) and high currents (several kA); this regime of operation is thus approaching a more vacuum spark-like regime. Mean ion charge states of up to 6.2 for tungsten and 3.7 for titanium have been measured, with the corresponding maximum charge states of up to 8+ and 6+, ... continued below

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16 p.

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Anders, A.; Brown, I.; MacGill, R. & Dickinson, M. September 1, 1995.

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Description

Ions of the cathode material are formed at vacuum arc cathode spots and extracted by a grid system. The ion charge states (typically 1--4) depend on the cathode material and only little on the discharge current as long as the current is low. Here the authors report on experiments with short pulses (several {micro}s) and high currents (several kA); this regime of operation is thus approaching a more vacuum spark-like regime. Mean ion charge states of up to 6.2 for tungsten and 3.7 for titanium have been measured, with the corresponding maximum charge states of up to 8+ and 6+, respectively. The results are discussed in terms of Saha calculations and freezing of the charge state distribution.

Physical Description

16 p.

Notes

INIS; OSTI as DE96002280

Source

  • 6. international conference on ion sources, Whistler (Canada), 10-16 Sep 1995

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  • Other: DE96002280
  • Report No.: LBL--37217
  • Report No.: CONF-9509125--7
  • Grant Number: AC03-76SF00098
  • DOI: 10.2172/132736 | External Link
  • Office of Scientific & Technical Information Report Number: 132736
  • Archival Resource Key: ark:/67531/metadc626263

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Creation Date

  • September 1, 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 5, 2016, 10:05 a.m.

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Anders, A.; Brown, I.; MacGill, R. & Dickinson, M. High ion charge states in a high-current, short-pulse, vacuum arc ion source, report, September 1, 1995; California. (digital.library.unt.edu/ark:/67531/metadc626263/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.