Mechanism of hot spots formation in pentaerythritol tetranitrate under pulsed laser irradiation

Mechanism of hot spots formation in pentaerythritol tetranitrate under pulsed laser irradiation

Bibliographic Details
Parent link:IOP Conference Series: Materials Science and Engineering
Vol. 510 : High Technology: Research and Applications (HTRA-2018).— 2019.— [012020, 5 p.]
Corporate Authors: Национальный исследовательский Томский политехнический университет Инженерная школа новых производственных технологий Отделение материаловедения, Национальный исследовательский Томский политехнический университет Инженерная школа новых производственных технологий
Other Authors: Oleshko V. I. Vladimir Ivanovich, Tsipilev V. P. Vladimir Papilovich, Zarko V. E., Yakovlev A. N. Aleksey Nikolaevich, Mazur M. A. Marina Aleksandrovna
Summary:Title screen
The spectral, kinetic, spatial, and amplitude characteristics of emissions of pressed samples of PETN (pentaerythritole tetranitrate) by the first harmonic of a neodymium laser (1064 nm, 12 ns) are studied. It is found that at the moment of irradiation of PETN by laser pulses, hot spots are formed on the surface of the samples. The energy density of laser radiation varies in the range of 0.5-3 J/cm{2}. The characteristics of hot spots are determined by absorbing inhomogeneities and parameters of laser radiation. Multi-pulse excitation leads to the annealing of absorbing irregularities and increased threshold of optical breakdown. The received results are interpreted on the basis of ideas of the low-threshold optical breakdown as evolving within local (defective) regions of the PETN in the electric field of the light wave.
Language:English
Published: 2019
Subjects:
электронный ресурс
труды учёных ТПУ
образование
горячие точки
лазерное облучение
прессованные образцы
отжиг
тетранитрат пентаэритрита
дефекты
Online Access:http://dx.doi.org/10.1088/1757-899X/510/1/012020
http://earchive.tpu.ru/handle/11683/56544
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=660796

Similar Items

Similar Items