LLE (Laboratory for Laser Energetics) review: Quarterly report, April-June 1986
- ed.
This volume of the LLE Review, covering the period April-June 1986, contains reports on GDL and OMEGA laser activities; analysis of neutron diagnostic methods of compressed laser targets; modeling of non-local heat flow in laser-heated plasmas; and developments in advanced technology areas at LLE: protective polymeric coatings for nonlinear optical materials, time-resolved observation of electron-phonon relaxation in copper, and noncontact electro-optic sampling of high-speed electrical waveforms with a gallium-arsenide injection laser. Finally, the National Laser Users Facility activities for this period are summarized. The following are highlights of the research reports contained in this issue: (1) A method has been developed for measuring the rhoR product of laser-compressed targets. The method involves doping the DT fuel with the isotope /sup 80/Kr, which is activated by the fusion-generated neutrons via the (n, 2n) reaction to yield /sup 79m/Kr whose ..gamma.. decay is counted following the capture of target debris. (2) A model for treating nonlocal effects in heat transport due to long mean-free-path electrons was developed and compared to hydrodynamic code results, which do not include these effects. (3) An organosilicone resin was found to be useful for the deposition of laser-damage-resistant, antireflectance or protective coatings on KDP, lithium niobate, and potassium pentaborate. (4) Electron-phonon relaxation time in copper has been directly measured by monitoring the laser-heating-induced modulation of the transmissivity of thin copper films. (5) The ability to make noncontact measurements of electrical waveforms with 30-ps diode-laser pulses has been demonstrated.
- Research Organization:
- Rochester Univ., NY (USA). Lab. for Laser Energetics
- DOE Contract Number:
- FC08-85DP40200
- OSTI ID:
- 7066122
- Report Number(s):
- DOE/DP/40200-25-Vol.27; ON: DE87005866
- Country of Publication:
- United States
- Language:
- English
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