Abstract
This paper reports the investigation of thermal decomposition mechanisms and evaluation of thermally released from two newly synthesized high-energy materials named 1-(4-nitrophenyl)-1H-1,2,3-triazole () and 2,6-bis ((4-(nitromethyl)-1H-1,2,3-triazol-1-yl)methyl) pyridine () using time-resolved pulsed photoacoustic (PA) pyrolysis technique. The PA spectra were recorded between the 30°C and 350°C range and by varying the pressure of compounds vapor using 532 nm wavelength of pulse duration 7 ns at 10 Hz repetition rate obtained from -switched Nd:YAG laser pulses. The PA results were cross verified with thermogravimetric-differential thermal analysis data. The quality factor "&=&"&=& of the PA cavity was measured to test the thermal stability of the compound. In addition, we have ascertained the molecular density, absorption cross sections of high-energy materials vapor in terms of . The corresponding values are of the order of and 0.5–6 kilobarn, respectively. These results once again confirm the close agreement between the radiative and nonradiative transitions data and established the role of during the thermal decomposition process.
© 2016 Optical Society of America
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