Sawtooth oscillations in the flux of runaway electrons to the PLT limiter

Barnes, C W; Strachan, J D

doi:10.2172/5328623

Title: Sawtooth oscillations in the flux of runaway electrons to the PLT limiter

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Abstract

Increased fluxes of runaway electrons at the PLT limiter are observed in the few milliseconds following internal disruptions. These fluxes have an inverted (outside) sawtooth character. The time for the flux to reach a maximum after the disruption has been studied as a function of the plasma parameters for thousands of PLT discharges. One interpretation is that this delay represents the time for a perturbation to the runaway electron population to travel from the q = 1 region to the plasma boundary. These times are approx. 10/sup -1/ of the electron thermal confinement times and increase with the plasma electron density.

Authors:: Barnes, C W; Strachan, J D

Publication Date:: Mon Mar 01 00:00:00 EST 1982

Research Org.:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

OSTI Identifier:: 5328623

Report Number(s):: PPPL-1879
ON: DE82009819; TRN: 82-011953

DOE Contract Number:: AC02-76CH03073

Resource Type:: Technical Report

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; PLT DEVICES; RUNAWAY ELECTRONS; ENERGY SPECTRA; ELECTRON DENSITY; LIMITERS; PLASMA SHEATH; ELECTRONS; ELEMENTARY PARTICLES; FERMIONS; LEPTONS; SPECTRA; THERMONUCLEAR REACTORS; TOKAMAK TYPE REACTORS; 700104* - Fusion Energy- Plasma Research- Plasma Kinetics-Experimental- (-1987)

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                    Barnes, C W, and Strachan, J D. Sawtooth oscillations in the flux of runaway electrons to the PLT limiter.  United States: N. p., 1982. 
        Web.  doi:10.2172/5328623.

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                    Barnes, C W, & Strachan, J D. Sawtooth oscillations in the flux of runaway electrons to the PLT limiter.  United States.  https://doi.org/10.2172/5328623

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                    Barnes, C W, and Strachan, J D. 1982.  
        "Sawtooth oscillations in the flux of runaway electrons to the PLT limiter".  United States.  https://doi.org/10.2172/5328623.  https://www.osti.gov/servlets/purl/5328623.

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@article{osti_5328623,

  title        = {Sawtooth oscillations in the flux of runaway electrons to the PLT limiter},

  author       = {Barnes, C W and Strachan, J D},

  abstractNote = {Increased fluxes of runaway electrons at the PLT limiter are observed in the few milliseconds following internal disruptions. These fluxes have an inverted (outside) sawtooth character. The time for the flux to reach a maximum after the disruption has been studied as a function of the plasma parameters for thousands of PLT discharges. One interpretation is that this delay represents the time for a perturbation to the runaway electron population to travel from the q = 1 region to the plasma boundary. These times are approx. 10/sup -1/ of the electron thermal confinement times and increase with the plasma electron density.},

  doi          = {10.2172/5328623},

  url          = {https://www.osti.gov/biblio/5328623},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Mon Mar 01 00:00:00 EST 1982},

  month        = {Mon Mar 01 00:00:00 EST 1982}

}

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