Spectral-kinetic Characteristics of the Glow of RDX-Fe Composites During Explosive Decomposition Initiated by Neodymium Laser Pulses

This work provides the results of measurements of spectral and kinetic characteristics of a luminescence at the explosive decomposition of RDX with the inclusions of ultradispersed particles of iron with the sizes of 75 nm in a maximum of distribution and a mass fraction of 0.4%. YAG:Nd
₃₊
laser ( λ = 1064 nm, τi=14 ns) was used as a source of initiation. The basic elements of the data-acquisition equipment were a polychromator and a streak camera. They were used for a luminescence spectrum scanning in time. Under the influence of a laser impulse, one was recorded the luminescence with its intensity falling down in time of ~ 60 ns. The state of a maximum of the luminescence spectrum scanning depends on the energy density of a laser radiation H. At increasing H, the state of a maximum migrates from the visible to the ultraviolet area up to the value λ = 420 nm. This luminescence is connected with the NO2. radicals which are formed during the influence of a laser impulse and variously excited. The luminescence of products of an explosion is observed in a microsecond time interval and has the thermal nature. The luminescence temperature is T=3500 K.