Measurements of density fluctuations using a simplified CO/sub 2/ laser forward scattering technique

Journal Article · Mon Aug 01 04:00:00 EDT 1988 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1140152· OSTI ID:6906361

Philipona, R; Kuettel, O

Coherent and fully turbulent modes of electron density fluctuations in a cylindrical magnetized plasma are investigated using a new simplified CO/sub 2/ laser forward scattering technique. In our small-angle scattering system a diffraction pattern is used as local oscillator for homodyne photomixing. Self-excited density fluctuations n-italic-tilde(K, ..omega..) of a He plasma have been measured in the parameter range 3 cm/sup -1/less than or equal toKless than or equal to24 cm/sup -1/ and 20 kHzless than or equal to..omega../2..pi..less than or equal to500 kHz.

• Research Organization: Department of Physics, University of Fribourg, Switzerland
• OSTI ID: 6906361
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 59:8; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
CARBON DIOXIDE LASERS
ELECTROMAGNETIC RADIATION
ELEMENTS
FAR INFRARED RADIATION
FLUIDS
GAS LASERS
GASES
HELIUM
INFRARED RADIATION
LASERS
LIGHT SCATTERING
NONMETALS
PLASMA DENSITY
PLASMA DIAGNOSTICS
RADIATIONS
RARE GASES
SCATTERING
TURBULENCE