Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apjs..127..299d&link_type=abstract
The Astrophysical Journal Supplement Series, Volume 127, Issue 2, pp. 299-304.
Astronomy and Astrophysics
Astronomy
23
Atomic Processes, Hydrodynamics, Plasmas, Radiative Transfer, Shock Waves
Scientific paper
An understanding of radiation effects on the evolution of shock waves is of great importance to many problems in astrophysics. Shock waves driven by a laser-heated plasma are attractive for laboratory investigation of these phenomena. Recent studies of intense short-pulse laser interactions with gases of atomic clusters indicate a potential avenue to access this regime of radiative hydrodynamics. We have measured the energy absorption efficiency of high-intensity, picosecond laser pulses in low-density gases composed of large atomic clusters and find that the energy absorption can be very high (>95%), producing a high-temperature plasma filament which consequently produces a strong blast wave. Interferometric characterization of these shock waves indicates that in high-Z gases such as Xe, radiation transport plays an important role in the evolution of the shock wave.
Ditmire Todd
Estabrook Kent
Remington Bruce A.
Shigemori Keisuke
Smith Robert A.
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