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Title: d-/sup 3/ He reaction measurements during fast wave minority heating in the PLT tokamak experiment

Abstract

Time- and energy-resolved d-/sup 3/He fusion reactions have been measured to infer the energy of the d/sup +/ or He/sup + +/ minority ions heated near their cyclotron frequency by the magnetosonic fast wave. The average energy of the reacting /sup 3/He ions during /sup 3/He minority heating is in the range of 100--400 keV, as deduced from the magnitude of the reaction rate, its decay time, and the energy spread of the proton reaction products. The observed reaction rate and its scaling with wave power and electron density and temperature are in qualitative agreement with a radial reaction rate model using the minority distribution predicted from quasilinear velocity space diffusion. Oscillations in the reaction rate are observed concurrent with sawtooth and m = 2 magnetohydrodynamic activity in the plasma.

Authors:
;
Publication Date:
Research Org.:
Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08540
OSTI Identifier:
5975276
Resource Type:
Journal Article
Journal Name:
Phys. Fluids; (United States)
Additional Journal Information:
Journal Volume: 26:7
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; DEUTERONS; FUSION REACTIONS; HELIUM IONS; PLASMA DIAGNOSTICS; PROTON PROBES; PLT DEVICES; PLASMA HEATING; CYCLOTRON FREQUENCY; CYCLOTRON RESONANCE; ELECTRON TEMPERATURE; ENERGY RESOLUTION; IONS; KEV RANGE 100-1000; PLASMA DENSITY; TIME RESOLUTION; TOKAMAK DEVICES; CHARGED PARTICLES; CLOSED PLASMA DEVICES; ENERGY RANGE; HEATING; KEV RANGE; NUCLEAR REACTIONS; PROBES; RESOLUTION; RESONANCE; THERMONUCLEAR DEVICES; THERMONUCLEAR REACTORS; TIMING PROPERTIES; TOKAMAK TYPE REACTORS; 700102* - Fusion Energy- Plasma Research- Diagnostics; 700101 - Fusion Energy- Plasma Research- Confinement, Heating, & Production

Citation Formats

Chrien, R E, and Strachan, J D. d-/sup 3/ He reaction measurements during fast wave minority heating in the PLT tokamak experiment. United States: N. p., 1983. Web.
Chrien, R E, & Strachan, J D. d-/sup 3/ He reaction measurements during fast wave minority heating in the PLT tokamak experiment. United States.
Chrien, R E, and Strachan, J D. 1983. "d-/sup 3/ He reaction measurements during fast wave minority heating in the PLT tokamak experiment". United States.
@article{osti_5975276,
title = {d-/sup 3/ He reaction measurements during fast wave minority heating in the PLT tokamak experiment},
author = {Chrien, R E and Strachan, J D},
abstractNote = {Time- and energy-resolved d-/sup 3/He fusion reactions have been measured to infer the energy of the d/sup +/ or He/sup + +/ minority ions heated near their cyclotron frequency by the magnetosonic fast wave. The average energy of the reacting /sup 3/He ions during /sup 3/He minority heating is in the range of 100--400 keV, as deduced from the magnitude of the reaction rate, its decay time, and the energy spread of the proton reaction products. The observed reaction rate and its scaling with wave power and electron density and temperature are in qualitative agreement with a radial reaction rate model using the minority distribution predicted from quasilinear velocity space diffusion. Oscillations in the reaction rate are observed concurrent with sawtooth and m = 2 magnetohydrodynamic activity in the plasma.},
doi = {},
url = {https://www.osti.gov/biblio/5975276}, journal = {Phys. Fluids; (United States)},
number = ,
volume = 26:7,
place = {United States},
year = {Fri Jul 01 00:00:00 EDT 1983},
month = {Fri Jul 01 00:00:00 EDT 1983}
}