Absorption of high-intensity subpicosecond lasers on solid density targets

Journal Article · Mon Nov 23 04:00:00 EST 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.69.3052· OSTI ID:7011057

Denavit, J ^[1]

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1. University of California, Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550 (United States)

The absorption of subpicosecond ([approx]100 fs) high-intensity ([ital I][approx]10[sup 20]--10[sup 21] W/cm[sup 2]) laser pulses normally incident on solid density targets is examined by particle simulations, which include electron scattering. For targets which are overdense by factors exceeding 100, electrons accelerated by the ponderomotive force of the laser couple their energy electrostatically to the ions and the absorption efficiency into the ions scales as [ital I][sup 1/2]. For example, absorption in a carbon target is only a few percent, but a large fraction of the absorbed energy is transferred to the ions.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7011057
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 69:21; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700350* -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
ABSORPTION
CARBON
CHARGED PARTICLES
COULOMB FIELD
DATA
DEUTERIUM
ELECTRIC FIELDS
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY ABSORPTION
ENERGY TRANSFER
FERMIONS
HYDROGEN ISOTOPES
INFORMATION
ION DENSITY
IONS
ISOTOPES
LASER-PRODUCED PLASMA
LEPTONS
LIGHT NUCLEI
NONMETALS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
PLASMA
PULSES
SCATTERING
SIMULATION
SORPTION
STABLE ISOTOPES
TARGETS
THEORETICAL DATA