Production of fast electrons in a prototype heliac by helicon waves

Journal Article · Fri Apr 01 04:00:00 EST 1994 · Physics of Plasmas; (United States)

DOI:https://doi.org/10.1063/1.870746· OSTI ID:6640339

Loewenhardt, P K; Blackwell, B D; Hamberger, S M ^[1]

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1. Plasma Research Laboratory, Research School of Physical Sciences and Engineering, Australian National University, Canberra (Australia)

The generation of plasma by helicon waves has been investigated in the Small Heliac Experimental Apparatus [Nucl. Fusion [bold 25], 1485 (1985)]. Evidence for wave--particle interaction in both argon and helium is presented in the form of observations of the electron distribution function. A high energy bump-on-tail feature is shown to coincide with the wave phase velocity and with an energy corresponding to a large ionization cross section. It is shown that the bump-on-tail feature may be related to the ionization capability of helicon waves and may be a result of some form of radio frequency current drive.

• OSTI ID: 6640339
• Journal Information: Physics of Plasmas; (United States), Journal Name: Physics of Plasmas; (United States) Vol. 1:4; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700340 -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
700350* -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
ARGON
CLOSED PLASMA DEVICES
CURRENT-DRIVE HEATING
DISTRIBUTION FUNCTIONS
ELECTRIC HEATING
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
FLUIDS
FUNCTIONS
GASES
HEATING
HELICON WAVES
HELIUM
IONIZATION
JOULE HEATING
LEPTONS
NONMETALS
PHASE VELOCITY
PLASMA HEATING
PLASMA PRODUCTION
RADIATIONS
RADIOWAVE RADIATION
RARE GASES
RESISTANCE HEATING
STELLARATORS
THERMONUCLEAR DEVICES
VELOCITY