Determination of species yield of ion sources used for intense neutral-beam injection Page: 1 of 21
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Determination of Species field of Ion Sources
Used for Intense Neutral-Beam Injection
C. C. Tsai, C, F. Barnett, H. H. Haselton
R. A. Langley, and tf. L. Stirling
For efficient plasna heating, ion sources of neutral - beam
injectors should be capable of producing ion beams with an atomic
fraction of 90S or higher. Diagnostic techniques for quantitatively
determining source species yield have been developed and evaluated.
Ihese include magnetic momentun analysis of the unneutralized ions
passing through the neutralizer, energy analysis of the neutral beam by
electrostatic separation of ions emanating from a stripping cell, and
quantity vs implantation—depth analysis of hydrogen implanted into a
crystal by SIMS technique. The operational features and advantages and
disadvantages of each technique will be discussed. If the effects of
beamlet optics, energy straggling in the accelerator, and neutralizer
gas scattering are taken into account, the results of the measurements
using the three techniques are shown to be mutually consistent within
This report was prepared as an account of work sponsored by an agency of the United States
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United States Government or any agency thereof.
Research sponsored by the Office of
Fusion Energy, U.S. Department of
Energy, under contract W-7405-eng-2o
with the Union Carbide Corporation.
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Tsai, C.C.; Barnett, C.F.; Haselton, H.H.; Langley, R.A. & Stirling, W.L. Determination of species yield of ion sources used for intense neutral-beam injection, article, January 1, 1982; Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc1089186/m1/1/: accessed June 16, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.