Observation of sawtooth redistribution of nonthermal, confined alpha particles in TFTR D-T discharges

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Description

Radial profiles of the density of confined alpha particles with energies in the 0.15-0.6 MeV range are spectroscopically observed before and after a sawtooth crash in a TFTR D-T plasma. A large drop in the core alpha density is seen indicating expulsion of alphas from the core to the plasma periphery. The measured changes in the alpha density profiles are consistent with predictions based on the Kolesnichenko sawtooth model, indicating that it may be used to reliably predict the effect of sawteeth on fusion-produced alphas.

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7 p.

Creation Information

Stratton, B.; Budny, R.; Chang, Z.; Fonck, R.; Wising, F. & Odblom, A. May 1, 1996.

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  • Stratton, B.
  • Budny, R.
  • Chang, Z. Princeton Univ., NJ (United States). Plasma Physics Lab.
  • Fonck, R. Wisconsin Univ., Madison, WI (United States)
  • Wising, F. Massachusetts Inst. of Tech., Cambridge, MA (United States) Plasma Fusion Center
  • Odblom, A. Chalmers Univ. of Technology, Goeteborg (Sweden). Inst. for Electromagnetic Field Theory and Plasma Physics

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Description

Radial profiles of the density of confined alpha particles with energies in the 0.15-0.6 MeV range are spectroscopically observed before and after a sawtooth crash in a TFTR D-T plasma. A large drop in the core alpha density is seen indicating expulsion of alphas from the core to the plasma periphery. The measured changes in the alpha density profiles are consistent with predictions based on the Kolesnichenko sawtooth model, indicating that it may be used to reliably predict the effect of sawteeth on fusion-produced alphas.

Physical Description

7 p.

Notes

INIS; OSTI as DE96012067

Source

  • Other Information: PBD: May 1996

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  • Other: DE96012067
  • Report No.: PPPL--3180
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/263915 | External Link
  • Office of Scientific & Technical Information Report Number: 263915
  • Archival Resource Key: ark:/67531/metadc666970

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • May 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

Description Last Updated

  • April 15, 2016, 6:48 p.m.

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Stratton, B.; Budny, R.; Chang, Z.; Fonck, R.; Wising, F. & Odblom, A. Observation of sawtooth redistribution of nonthermal, confined alpha particles in TFTR D-T discharges, report, May 1, 1996; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc666970/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.