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Title: Harmonic generation and parametric decay in the ion cyclotron frequency range

Abstract

Harmonic generation and parametric decay are examined in a toroidal ACT-I plasma using electrostatic plate antennas. The harmonic generation, which is consistent with sheath rectification, is sufficiently strong that the nonlinearly generated harmonic modes themselves decay parametrically. Resonant and nonresonant parametric decay of the second harmonic are observed and compared with uniform pump theory. Resonant decay of lower hybrid waves into lower hybrid waves and slow ion cyclotron waves is seen for the first time. Surprisingly, the decay processes are nonlinearly saturated, indicating absolute instability.

Authors:
; ;
Publication Date:
Research Org.:
Princeton Univ., NJ (USA). Plasma Physics Lab.
OSTI Identifier:
6713753
Alternate Identifier(s):
OSTI ID: 6713753; Legacy ID: DE84015147
Report Number(s):
PPPL-2116
ON: DE84015147
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ICR HEATING; PARAMETRIC INSTABILITIES; LOWER HYBRID HEATING; TOKAMAK DEVICES; ANTENNAS; HARMONICS; CLOSED PLASMA DEVICES; ELECTRICAL EQUIPMENT; EQUIPMENT; HEATING; HIGH-FREQUENCY HEATING; INSTABILITY; OSCILLATIONS; PLASMA HEATING; PLASMA INSTABILITY; PLASMA MACROINSTABILITIES; THERMONUCLEAR DEVICES 700101* -- Fusion Energy-- Plasma Research-- Confinement, Heating, & Production

Citation Formats

Skiff, F.N., Wong, K.L., and Ono, M. Harmonic generation and parametric decay in the ion cyclotron frequency range. United States: N. p., 1984. Web. doi:10.2172/6713753.
Skiff, F.N., Wong, K.L., & Ono, M. Harmonic generation and parametric decay in the ion cyclotron frequency range. United States. doi:10.2172/6713753.
Skiff, F.N., Wong, K.L., and Ono, M. Fri . "Harmonic generation and parametric decay in the ion cyclotron frequency range". United States. doi:10.2172/6713753. https://www.osti.gov/servlets/purl/6713753.
@article{osti_6713753,
title = {Harmonic generation and parametric decay in the ion cyclotron frequency range},
author = {Skiff, F.N. and Wong, K.L. and Ono, M.},
abstractNote = {Harmonic generation and parametric decay are examined in a toroidal ACT-I plasma using electrostatic plate antennas. The harmonic generation, which is consistent with sheath rectification, is sufficiently strong that the nonlinearly generated harmonic modes themselves decay parametrically. Resonant and nonresonant parametric decay of the second harmonic are observed and compared with uniform pump theory. Resonant decay of lower hybrid waves into lower hybrid waves and slow ion cyclotron waves is seen for the first time. Surprisingly, the decay processes are nonlinearly saturated, indicating absolute instability.},
doi = {10.2172/6713753},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jun 01 00:00:00 EDT 1984},
month = {Fri Jun 01 00:00:00 EDT 1984}
}

Technical Report:

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