Neutral Particle Analyzer Measurements of Ion Behavior in NSTX

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Initial results obtained with the Neutral Particle Analyzer (NPA) diagnostic on the National Spherical Torus Experiment (NSTX) are presented. Magnetohydrodynamic activity and reconnection events cause depletion of the deuterium energetic ion distribution created by neutral-beam injection. Adding High Harmonic Fast Wave Heating to neutral-beam-heated discharges results in the generation of an energetic ion tail above the beam injection energy. NPA measurements of the residual hydrogen ion temperature are in good agreement with those from recombination spectroscopy.

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845 Kilobytes pages

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Medley, S.S.; Bell, R.E.; Darrow, D.S. & Roquemore, A.L. February 6, 2002.

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Description

Initial results obtained with the Neutral Particle Analyzer (NPA) diagnostic on the National Spherical Torus Experiment (NSTX) are presented. Magnetohydrodynamic activity and reconnection events cause depletion of the deuterium energetic ion distribution created by neutral-beam injection. Adding High Harmonic Fast Wave Heating to neutral-beam-heated discharges results in the generation of an energetic ion tail above the beam injection energy. NPA measurements of the residual hydrogen ion temperature are in good agreement with those from recombination spectroscopy.

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845 Kilobytes pages

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INIS; OSTI as DE00796122

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  • Other Information: PBD: 6 Feb 2002

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  • Report No.: PPPL-3668.pdf
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/796122 | External Link
  • Office of Scientific & Technical Information Report Number: 796122
  • Archival Resource Key: ark:/67531/metadc741450

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  • February 6, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • April 15, 2016, 9:46 p.m.

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Medley, S.S.; Bell, R.E.; Darrow, D.S. & Roquemore, A.L. Neutral Particle Analyzer Measurements of Ion Behavior in NSTX, report, February 6, 2002; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc741450/: accessed June 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.