Time And Spacial Resolved Spectroscopy Research Of NC/Al Energetic Material

Compared with normal compound energetic materials and elemental materials, metal nanoenergetic materials possess better oxidizer-fuel proportion as well as enormous oxidizer-fuel contact area, which factor enables these materials to have significant features such as fast and full combustion and greater energy releasing. So research on the nanoenergetic materials has been thriving.Among the latest researches on time resolved technology, all the emission is collected by detector, actually, due to the gauss distribution of laser, the emission might change with position. Therefore, in this subject, apart from time resolved technology, we design spacial resolved system. The reaction process of NC/Al material is studied by time and spacial resolved spectroscopy. The rules of reaction influenced by laser energy and materials'compound parameters are obtained,the dynamics of the reaction is given an initial analyse. The result shows that the intensity and lifetime of emission increase with the augment of laser energy as well as the concentration of Al particles. The emission contain short and long lifetime, under the influence of different energy, the weight factors of the two kinds lifetime expectancy are different too, the weight of short lifetime is much bigger than that of long lifetime. With the augment of laser energy, short lifetime's weight factor decreases. Influenced by the gauss distribution of laser energy, at different positions of reaction area, the weight factors of short lifetime are different too, which means in the spectroscopy of emission, short and long lifetime derive from not only different excitation, but from different positions of reaction area. After the sample being ignited, the first reaction is the oxidation of Aln+ by–ONO2, the amount of–ONO2 consumption increases with the augment of laser energy, the whole NC molecule will decompose under the influence of plasma.