Ultrafast dynamics of shock waves and shocked energetic materials

David E. Hare, I. Y.Sandy Lee, Jeffrey R. Hill, Jens Franken, Honoh Suzuki, Bruce J. Baer, Eric L. Chronister, Dana D. Dlott

Research output: Contribution to journalConference articlepeer-review

Abstract

Experimental measurements of material effects induced by the passage of sharp shock fronts require techniques which provide high temporal resolution and high spatial resolution. Since typical shock velocities are a few microns per nanosecond, sub-nanosecond probing requires sub-micron spatial resolution. In our experiments, the required temporal resolution is furnished using picosecond laser generated shock waves and picosecond spectroscopy. The spatial resolution is furnished by engineering nanometer scale structures into our shock target arrays. In one technique, absorption transients in the spectrum of a thin layer of molecules, termed an optical nanogauge, are investigated. Shock-induced molecular energy transfer processes are observed in condensed matter for the first time. In a second technique, sub-micron particles of an energetic material are shocked and probed using ps coherent Raman spectroscopy. This probing technique permits the instantaneous measurement of the temperature, pressure and composition of an energetic material under dynamic shock loading.

Original languageEnglish (US)
Pages (from-to)337-348
Number of pages12
JournalMaterials Research Society Symposium - Proceedings
Volume418
StatePublished - 1996
EventProceedings of the 1995 MRS Fall Symposium - Boston, MA, USA
Duration: Nov 27 1995Nov 30 1995

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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