Deflagration Rates and Molecular Bonding Trends of Statically Compressed Secondary Explosives
We discuss our measurements of the chemical reaction propagation rate as a function of pressure. Materials investigated have included CL-20, HMX, TATB, and RDX crystalline powders, LX-04, Comp B, and nitromethane. The anomalous correspondence between crystal structure, including in some instances isostructural phase transitions, on pressure-dependant RPRs of TATB, HMX, Nitromethane, CL-20, and PETN have been elucidated using micro-IR and -Raman spectroscopies. Here we specifically highlight pressure-dependent physicochemical mechanisms affecting the deflagration rate of nitromethane and epsilon-CL-20. We find that pressure induced splitting of symmetric stretch NO{sub 2} vibrations can signal the onset of increasingly more rapid combustion reactions.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 978415
- Report Number(s):
- LLNL-PROC-425270; TRN: US201010%%85
- Resource Relation:
- Conference: Presented at: 14th International Detonation Symposium, Coeur d'alene, OR, United States, Apr 11 - Apr 16, 2010
- Country of Publication:
- United States
- Language:
- English
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