The Low-Temperature Vibrational Behavior of Pentaerythritol Tetranitrate

Report No. ARL-TR-4470
Authors: Jennifer A. Ciezak; Timothy A. Jenkins
Date/Pages: June 2008; 24 pages
Abstract: The authors report the room temperature Raman and synchrotron Fourier transform infrared measurements of pentaerythritol tetranitrate (PETN), as well as low-temperature Raman measurements from 4 to 298 K up to ~15 GPa, using a helium gas-pressure medium. No evidence of phase transitions was observed in the pressure/temperature range studied, although the molecular symmetry of PETN is modified from S4 to D2 near 8.1 GPa. The modification was not found to be temperature dependent, and decompression studies indicated the reversibility of the symmetry change.
Distribution: Approved for public release
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Last Update / Reviewed: June 1, 2008