Accession Number : ADA334917

Title :   Precursor-Shock in a Well-Characterized Thermal Layer

Descriptive Note : Interim rept.

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC LASERPHYSICS SECTION

Personal Author(s) : Grun, J. ; Burris, R. ; Joyce, G. ; Slinker, S. ; Huba, J.

PDF Url : ADA334917

Report Date : 22 DEC 1997

Pagination or Media Count : 28

Abstract : We present an experiment that measured the behavior of a shock precursor in a well-characterized, thin thermal layer above a 3000 deg K hot surface. A laser pulse focused onto a thin solid target produced the shock, eliminating interference from explosion products. Precursor and thermal layer characteristics were measured using spectroscopy, interferometry, and dark-field shadowgraphy.

Descriptors :   *PRECURSORS, *SHOCK WAVES, *THERMAL ANALYSIS, AIR FLOW, PULSED LASERS, LASER BEAMS, GAS DYNAMICS, TEMPERATURE GRADIENTS, HOT GASES, ACOUSTIC VELOCITY, STATIC PRESSURE.

Subject Categories : Fluid Mechanics
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE