Accession Number:

ADA585168

Title:

High Energy-Density Materials with Fast Energy Release: Molecular Scale Shock Response of Explosives

Descriptive Note:

Technical rept. Jul 2009-Sep 2012

Corporate Author:

LOS ALAMOS NATIONAL LAB NM

Personal Author(s):

Report Date:

2013-05-01

Pagination or Media Count:

16.0

Abstract:

This final report details the results of experiments designed to answer questions fundamental to shock initiation of explosives 1 are electronic excitations prevalent in shock initiation 2 does vibrational non-equilibrium contribute, and if so, which model is correct 3 what chemical reactions occur, what are the kinetics, and what is the temperature that drives them The answers to these questions underlie both the molecular level understanding of energetic material initiation and can justify or refute assumptions that must be made in modeling these processes. Femtosecond ultravioletvisible absorption spectroscopy was used to address this issue of electronic excitation. Femtosecond stimulated Raman spectroscopy performed simultaneously in Stokes and anti-Stokes spectral regions was developed as a measurement of temperature and chemistry. Experimental results are presented for RDX 1,3,5-trinitroperhydro-1,3,5-triazine, a common molecular crystalline explosive, as well as for non-explosive materials.

Subject Categories:

  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE