Interaction of 1. 06. mu. m laser radiation with high Z disk targets

Journal Article · Mon Oct 01 04:00:00 EDT 1979 · Phys. Fluids; (United States)

OSTI ID:5872340

Rosen, M D; Phillion, D W; Rupert, V C; Mead, W C; Kruer, W L; Thomson, J J; Kornblum, H N; Slivinsky, V W; Caporaso, G J; Boyle, M J; Tirsell, K G

Gold disks have been irradiated with 1.06 ..mu..m laser light at intensities between 7 x 10/sup 13/ and 3 x 10/sup 15/ W/cm/sup 2/, and pulse lengths between 200 and 1000 psec. Due to the high Z and long pulse, inverse bremsstrahlung becomes an important absorption mechanism and competes strongly with resonance absorption and stimulated scattering. In addition to measured absorptions, data on the temporal, spatial, angular, and spectral characteristics of the x-ray emission are presented. Temporally and spectrally resolved back-reflected light, and polarization-dependent sidescattered light are detected, providing estimates for the amount of stimulated scattering and of the coronal electron temperature. Inhibited electron thermal conduction and nonlocal thermodynamic equilibrium ionization physics play key roles in bringing numerical simulations of these experiments into agreement with all of the above-mentioned data.

• Research Organization: Lawrence Livermore Laboratory, University of California, Livermore, California 94550
• OSTI ID: 5872340
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 22:10; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102 -- Fusion Energy-- Plasma Research-- Diagnostics
700106 -- Fusion Energy-- Plasma Research-- Plasma Production-- (-1987)
700208* -- Fusion Power Plant Technology-- Inertial Confinement Technology
ABSORPTION
BREMSSTRAHLUNG
BRILLOUIN EFFECT
CALORIMETERS
COHERENT SCATTERING
COLLISIONS
ELECTRIC FIELDS
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY TRANSFER
FERMIONS
FLUID MECHANICS
GOLD
HEAT TRANSFER
HYDRODYNAMICS
LASER RADIATION
LASER-PRODUCED PLASMA
LEPTONS
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
MEASURING INSTRUMENTS
MECHANICS
METALS
PHOTODIODES
PHOTON COLLISIONS
PLASMA
PLASMA DIAGNOSTICS
PLASMA SIMULATION
PULSES
RADIATIONS
RESONANCE ABSORPTION
SCATTERING
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SPECTRA
THERMAL CONDUCTION
TRANSITION ELEMENTS
TURBULENCE
TWO-DIMENSIONAL CALCULATIONS
X-RAY SPECTRA