Measurement of CO[sub 2] laser small angle Thomson scattering on a magnetically confined plasma

Journal Article · Mon Jan 04 04:00:00 EST 1993 · Applied Physics Letters; (United States)

DOI:https://doi.org/10.1063/1.108808· OSTI ID:6897792

Richards, R K; Hutchinson, D P; Bennett, C A; Hunter, H T; Ma, C H ^[1]

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1. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6372 (United States)

We report the first successful small-angle (less than 1[degree]) Thomson scattering measurement of 10 [mu]m radiation from a magnetically confined toroidal plasma. This represents a proof-of-principle demonstration of a new diagnostic technique for confined deuterium-tritium fusion-product alpha particles in future fusion reactors. This result was achieved by detecting scattered CO[sub 2] laser light from the plasma of the ATF torsatron at an angle of 0.86[degree] using a novel heterodyne receiver scheme. A predicted resonance in the scattered power as a function of plasma electron density is clearly resolved in the measurements.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6897792
• Journal Information: Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 62:1; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700320* -- Plasma Diagnostic Techniques & Instrumentation-- (1992-)
ALPHA PARTICLES
ANNULAR SPACE
CARBON DIOXIDE LASERS
CHARGED PARTICLES
CLOSED CONFIGURATIONS
CONFIGURATION
DISTRIBUTION FUNCTIONS
FUNCTIONS
FUSION YIELD
GAS LASERS
INELASTIC SCATTERING
LASERS
MAGNETIC FIELD CONFIGURATIONS
NUCLEAR REACTION YIELD
NUCLEAR REACTIONS
NUCLEOSYNTHESIS
PLASMA DIAGNOSTICS
SCATTERING
SPACE
SYNTHESIS
THERMONUCLEAR REACTIONS
THOMSON SCATTERING
TOROIDAL CONFIGURATION
VELOCITY
YIELDS