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Raman spectroscopic studies of shock-compressed nitromethane and nitromethane-d/sub 3/

Conference ·
OSTI ID:5860520
Single-pulse Raman spectroscopy has been used to examine the effect of shock compression on the C-N stretching modes near 900 cm/sup /minus/1/ in a 50/50 mixture of nitromethane (NM) and perdeutero nitromethane (NM-d/sub 3/). Samples were shocked in a single step to pressures as high as 6.8 GPa using a compressed gas gun driver. Spectra up to 5.5 GPa showed he expected pressure-induced shifting of the Raman frequencies; at higher pressures the lines were significantly broadened and the frequency shift was reversed, indicating the initial stages of reaction. In no instance did we see significant isotopic exchange as would be evidenced by alteration of the relative line intensities. 6 refs., 3 figs., 1 tab.
Research Organization:
Sandia National Labs., Albuquerque, NM (USA)
DOE Contract Number:
AC04-76DP00789
OSTI ID:
5860520
Report Number(s):
SAND-89-1069C; CONF-890812-35; ON: DE89016812
Country of Publication:
United States
Language:
English