High Energy-Density Materials with Fast Energy Release: Molecular Scale Shock Response of Explosives
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 ultraviolet/visible 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 2013
- Accession Number
- ADA585168
Entities
People
- Shawn D McGrane
Organizations
- Los Alamos National Laboratory