Determination of the optical thickness of a laser-produced plasma flare from absolute spectral brightness

Journal Article · Sun Jun 01 00:00:00 EDT 1975 · Sov. Tech. Phys. Lett. (Engl. Transl.); (United States)

OSTI ID:7336682

Dymshitz, Yu I

To determine the optical thickness tau of a plasma produced by laser action on a metal surface, use is made of the relation between the spectral brightness of the radiating plasma layer b/sub lambda/ and its temperature T, the absorption coefficient K/sub lambda/, and the thickness d in the observation direction. The flare is produced by focusing in vacuum a single pulse from a neodymium laser (approximately 30 nsec at half-height) onto the surfaces of flat plates of aluminum, copper, lead, and graphite into spots 3 and 0.5 mm in diameter.

• OSTI ID: 7336682
• Journal Information: Sov. Tech. Phys. Lett. (Engl. Transl.); (United States), Vol. 1:6; Other Information: Translated from Pis'ma Zh. Tekh. Fiz.; 1: 554-558(26 Jun 1975)
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
LASER-PRODUCED PLASMA
OPTICAL PROPERTIES
EMISSION SPECTRA
NEODYMIUM LASERS
PLASMA DIAGNOSTICS
THICKNESS
DIMENSIONS
LASERS
PHYSICAL PROPERTIES
PLASMA
SOLID STATE LASERS
SPECTRA
700106* - Fusion Energy- Plasma Research- Plasma Production- (-1987)
700102 - Fusion Energy- Plasma Research- Diagnostics