Journal article
Decomposition of γ-cyclotrimethylene trinitramine (γ-RDX): relevance for shock wave initiation
The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, Vol.116(34), pp.8713-8717
08/30/2012
Handle:
https://hdl.handle.net/2376/111139
PMID: 22873636
Abstract
To elucidate the reactive behavior of RDX crystals at pressures and temperatures relevant to shock wave initiation, Raman spectroscopy and optical imaging were used to determine the pressure-temperature (P-T) stability and the decomposition of γ-RDX, the high pressure phase of RDX. Experiments were performed on single crystals in a diamond anvil cell at pressures from 6 to 12 GPa and at temperatures up to 600 K. Evidence for the direct decomposition of γ-RDX above 6 GPa, without the involvement of other phases, is provided. The upper limit of the P-T locus for the γ-RDX thermal decomposition was determined. A refined P-T phase diagram of RDX is presented that includes the current findings for γ-RDX. The static compression results are used to gain key insight into the shock initiation of RDX, including a determination of the RDX phase at decomposition and understanding the role of pressure and temperature in accelerating shock induced decomposition. This study has established the important role that γ-RDX plays in decomposition of RDX under static and shock compression conditions; thus theoretical modeling of RDX decomposition at high pressures and temperatures needs to incorporate the γ-phase response.
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Details
- Title
- Decomposition of γ-cyclotrimethylene trinitramine (γ-RDX): relevance for shock wave initiation
- Creators
- Zbigniew A Dreger - Institute for Shock Physics and Department of Physics, Washington State University , Pullman, Washington 99164-2816, United States. dreger@wsu.eduYogendra M Gupta
- Publication Details
- The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, Vol.116(34), pp.8713-8717
- Academic Unit
- Physics and Astronomy, Department of
- Publisher
- United States
- Identifiers
- 99900547378001842
- Language
- English
- Resource Type
- Journal article