Modeling of Blast Waves Generated on the Falcon Laser

Details Modeling of Blast Waves Generated on the Falcon Laser Modeling of Blast Waves Generated on the Falcon Laser

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..dpp.r8q16k&link_type=abstract

American Physical Society, Division of Plasma Physics Meeting, November 16-20, 1998 New Orleans, LA, abstract #R8Q.16

Physics

Plasma Physics

Scientific paper

We are simulating experiments being done on the Falcon laser to generate strong, cylindrically diverging blast waves of relevance to astrophysics [J.T. Larsen and S.M. Lane, JQSRT 51, 179 (1994).]. These experiments extend to cylindrical geometry earlier work by Grun et al. on spherical blast waves [J. Grun et al., Phys. Rev. Lett. 66, 2738 (1991).] The Falcon laser generates pulses of a few hundred mJ in 30 fs at a wavelength of 820 nm, imaged with =46/15 optics into an Ar gas-jet target of ion density 10^19 cm^3. The energy is deposited over a cylindrical volume of dimensions 1 mm length by 50 μ m diameter. For our numerical simulations, we use the radiation-hydrodynamics code HYADES [C.F. McKee and B.T. Draine, Science 252, 397 (1991).] in cylindrical geometry to simulated the evolution of this cylindrical shock wave, and comparing the simulations with the data and with Sedov-Taylor blast wave theory. The goal of this effort is to develop a laboratory setting for studying strong shocks of relevance to supernova remnants, gamma-ray bursts, and other high energy astrophysics phenomena. * Work performed under the auspices of the U.S. Department of Energy by the Lawrence Livermore National Laboratory under Contract W-7405-ENG-48.

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