Abstract
A comparative study of the efficiency of the laser initiation of PETN by the first and second harmonics (1060 and 530 nm) of a neodymium-doped phosphate glass laser was performed. A significant difference in the efficiency of PETN initiation by the different harmonics was revealed: as the initial temperature of the sample increased from 373 to 450 K, the threshold initiation fluence decreased from 3.0 to 0.5 J/cm2; at the same time, the second harmonic failed to initiate PETN even at a fluence of 10 J/cm2. The absorption spectrum of PETN was found to have a weak absorption band with a maximum at λ m = 1020 nm. It was assumed that the high efficiency of initiation by the first harmonic is associated with light absorption (photo-initiation) by this band
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Original Russian Text © E.D. Aluker, N.L. Aluker, G.M. Belokurov, A.G. Krechetov, B.G. Loboiko, D.R. Nurmukhametov, A.V. Tupitsyn, V.P. Filin, 2010, published in Khimicheskaya Fizika, 2010, Vol. 29, No. 1, pp. 49–52.
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Aluker, E.D., Aluker, N.L., Belokurov, G.M. et al. Efficiency of laser initiation and absorption spectra of PETN. Russ. J. Phys. Chem. B 4, 63–65 (2010). https://doi.org/10.1134/S1990793110010094
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DOI: https://doi.org/10.1134/S1990793110010094