Accession Number : ADA297263

Title :   NIKE KrF Laser Facility.

Descriptive Note : Annual rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Dahlberg, Jill

PDF Url : ADA297263

Report Date : JUN 1994

Pagination or Media Count : 211

Abstract : For the past four years, the Naval Research Laboratory has been developing a new krypton fluoride laser called Nike as our next step in the evaluation of direct-drive laser fusion. The fundamental near-term justification for KrF is its potential to produce a very smooth laser profile using the optical smoothing technique called ISI (induced spatial incoherence). For longer-term power plant applications, KrF also appears to be the most attractive laser option. In general, any laser nonuniformity tends to degrade the performance of a high gain pellet design, because the laser nonuniformity seeds the Rayleigh-Taylor hydrodynamic instability. This instability can be ameliorated by preheating the fuel, but the preheat then reduces the thermonuclear yield. To obtain the highest possible yield, one generally wants the least possible laser nonuniformity. The first phase of Nike is now operating, and its performance has exceeded our expectations. (MM)

Descriptors :   *PLASMAS(PHYSICS), *LASER TARGET DESIGNATORS, *COMPUTATIONAL FLUID DYNAMICS, *LASERS, *FLUORIDES, *HYDRODYNAMICS, *KRYPTON, LASER PUMPING, MIRRORS, SPATIAL DISTRIBUTION, COMMERCE, SHOCK WAVES, OPTICAL IMAGES, PULSED LASERS, LASER BEAMS, FUELS, INCOHERENCE, THERMAL CONDUCTIVITY, NAVAL RESEARCH, PELLETS, BEAM STEERING, LASER AMPLIFIERS, HIGH GAIN, RAYLEIGH TAYLOR INSTABILITY, LASER INDUCED FUSION.

Subject Categories : Lasers and Masers
      Optical Detection and Detectors
      Fusion Devices(thermonuclear)
      Fluid Mechanics
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE