SHOCK WAVE DIAGNOSTICS BY TIME-RESOLVED INFRARED RADIOMETRY AND NON-LINEAR RAMAN SPECTROSCOPY

摘要: Two different kinds of experimental techniques have been used to probe shocked materials. Inverse Raman (Raman-induced loss) spectroscopy (IRS) was for time-resolved shock wave experiments. Explosive loading stainless steel driver plates cyclohexane and single-crystal pentaerythritoltetranitrate (PETN). Five GPa shocks in PETN result only small band frequency shifts. In a separate series experiments, infrared emission from explosives with impedance matching, transmitting windows measured. nanosecond response-time radiometers InSb HgCdTe detectors provided further insight into shock-induced reactions explosives. Radiance histories pressed TATB IR exhibited resolved heating following reaction dramatic differences between particle size distributions the same density. Detonation radiance provide new technique detonation zone structure. Recent single-frame, 12 ns-exposure image intensifier pictures impedance-matching show visible hot spots, results support conclusions data.