Vibrational Spectroscopy Study of β and α RDX Deposits
| Autor: | Perla M. Torres, Alberto Santana, Liza Mercado, Miguel Castro, Ismael Cotte, R. Thomas Chamberlain, Samuel P. Hernandez, Nairmen Mina, and Richard Lareau |
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| Rok vydání: | 2004 |
| Předmět: | |
| Zdroj: | The Journal of Physical Chemistry B. 108:8799-8805 |
| ISSN: | 1520-5207 1520-6106 |
| Popis: | Deposits of β and α RDX on glass substrates have been examined with optical and Raman microscopy. The measurements reveal significant differences in the morphology and Raman spectra of β and α RDX. Structures that resemble an island, as well as scattered particles, are observed in white light images of β RDX. Well-defined crystals are observed in white light images of α RDX. The spectroscopic signature of these forms of RDX has marked differences in Raman frequencies and relative intensities. The transition from β to α RDX is driven by the amount of RDX deposited. There is a close agreement between measured and calculated vibrational frequencies for β and gas-phase RDX. A poor correlation is found between measured and predicted Raman intensities and depolarization ratios for β and gas-phase RDX, respectively. These differences lead us to conclude that the properties of β and gas phase RDX are markedly different, despite the similarities in the vibrational frequencies. |
| Databáze: | OpenAIRE |
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