UV Single Photon Dissociation of Furazan Based Energetic Materials: DAAF

ORAL

Abstract

The new series of furazan-based energetic materials is characterized by low sensitivity to impact and friction. They have broad application as fuels and propellants; however, extra nitro functional groups attached to the furazan ring (e.g. 4,4$^{\prime} $-dinitro-3,3$^{\prime} $-azoxyfurazan) adversely impact the thermal stability of these energetic materials. In order to evaluate the effect of nitro functional groups on furazan-based energetic materials the decomposition of 4,4$^{\prime} $-diamino-3,3$^{\prime} $-azoxyfurazan (DAAF), from excited electronic states, has been investigated by UV excitation (8 ns duration) and time of flight mass spectroscopy. The NO molecule is observed as an initial product. Three vibronic transitions of NO are characterized. Simulation of the NO [A $^{2}\Sigma $ (v$^{\prime} $=0)$\leftarrow $X $^{2}\Pi $ (v$\prime $=1)] transition and fitting to the intensity ratios among NO vibronic transition yields rotational and vibrational temperatures of 30 K and 1265 K, respectively. Compared with NO gas spectra, under comparable condition, the NO from decomposition of DAAF is vibrationally hot and rotationally cold.

–

Authors

  • Atanu Bhattacharya

    Colorado State University, Colorado State University, Chemistry Department, Department of Chemistry, Colorado State University

  • Yuanqing Guo

    Colorado State University, Colorado State University, Chemistry Department, Department of Chemistry, Colorado State University

  • Margo Greenfield

    Colorado State University, Colorado State University, Chemistry Department, Department of Chemistry, Colorado State University

  • Elliot R. Benstein

    Colorado State University, NSF ERC for Extreme Ultraviolet Science and Technology, Colorado State University Departments of Chemistry and Electrical and Computer Engineering, NSF ERC for Extreme Ultraviolet Science and Technology, Colorado State University, Colorado State University, Chemistry Department, Department of Chemistry, Colorado State University, Colorado Stete University, Department of Chemistry, Department of Chemistry, Colorado State Univ.