Decomposition of γ-cyclotrimethylene trinitramine (γ-RDX): relevance for shock wave initiation
Dreger, ZA; Gupta, YM
| HERO ID | 1506918 |
|---|---|
| In Press | No |
| Year | 2012 |
| Title | Decomposition of γ-cyclotrimethylene trinitramine (γ-RDX): relevance for shock wave initiation |
| Authors | Dreger, ZA; Gupta, YM |
| Journal | Journal of Physical Chemistry A |
| Volume | 116 |
| Issue | 34 |
| Page Numbers | 8713-8717 |
| 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. |
| Doi | 10.1021/jp306589h |
| Pmid | 22873636 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |