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Factors affecting the NQR line width in nitramine explosives |
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| Authors: | M. L. Buess S. M. Caulder |
| Affiliation: | 1. Advanced Technology Division, SFA, Largo, Maryland, USA 2. Chemistry Division, Code 6122, Naval Research Laboratory, 20375, Washington, DC, USA 3. Research and Technology Department, Naval Surface Warfare Center, Indian Head Division, Indian Head, Maryland, USA |
| Abstract: | A number of factors associated with crystal quality contribute to the nuclear quadrupole resonance (NQR) line width. Imperfections such as dislocations, voids, strain and impurities can be electrical sources that distort the electric field gradient at nearby quadrupolar nuclei and broaden the observed NQR line. We measured the14N NQR line widths in powdered samples of the nitramine explosives hexahydro-1,3,5-trinitro-s-triazine (RDX), octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) and 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane and show correlations with sample purity, particle size distribution and density. Cast plastic-bonded explosives containing either RDX or HMX were also studied and their line widths compared with those of the powdered samples. |
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