دورية أكاديمية
Characterization of high-explosive detonations using broadband infrared external cavity quantum cascade laser absorption spectroscopy.
العنوان: | Characterization of high-explosive detonations using broadband infrared external cavity quantum cascade laser absorption spectroscopy. |
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المؤلفون: | Phillips, Mark C., Bernacki, Bruce E., Harilal, Sivanandan S., Brumfield, Brian E., Schwallier, Joel M., Glumac, Nick G. |
المصدر: | Journal of Applied Physics; 9/7/2019, Vol. 126 Issue 9, pN.PAG-N.PAG, 19p, 1 Diagram, 4 Charts, 22 Graphs |
مصطلحات موضوعية: | LASER spectroscopy, QUANTUM cascade lasers, INFRARED lasers, COMBUSTION products, ABSORPTION spectra, INFRARED absorption |
مستخلص: | Infrared laser absorption spectroscopy provides a powerful tool for probing physical and chemical properties of high-explosive detonations. A broadly tunable swept-wavelength external cavity quantum cascade laser operating in the mid-wave infrared (MWIR) spectral region is used to measure transmission through explosive fireballs generated from 14 g charges of 4 different explosive types detonated in an enclosed chamber. Analysis of time-resolved transmission and emission at a 2 μs sampling rate shows the evolution of fireball infrared opacity in the first 10 ms after detonation. Broadband high-resolution absorption spectra acquired over the spectral range of 2050–2300 cm−1 (4.35–4.88 μm) at a 100 Hz rate are used to measure properties of fireball evolution over longer time scales out to 100 s. Path-integrated concentrations of combustion products CO, CO |
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قاعدة البيانات: | Complementary Index |
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