B. P. Aduev, D. R. Nurmuhametov, G. M. Belokurov, N. V. Nel’ubina, A. V. Tupitsyn, “Optoacoustic effects in pentaerythritol tetranitrate with ultrafine aluminum-particle inclusions under pulsed-laser action”, Optics and Spectroscopy, 2018, Volume 124, Issue 3,Pages <nobr>404

This article is cited in 12 papers

Lasers and their applications

Optoacoustic effects in pentaerythritol tetranitrate with ultrafine aluminum-particle inclusions under pulsed-laser action

B. P. Aduev^a, D. R. Nurmuhametov^ab, G. M. Belokurov^a, N. V. Nel’ubina^a, A. V. Tupitsyn^c

^a Institute of Coal Chemistry and Material Science, Siberian Branch, Russian Academy of Sciences, Kemerovo, 650000, Russia
^b Kemerovo State University, Kemerovo, 650000, Russia
^c Yurga Technological Institute, Tomsk Polytechnical University, Yurga, 652057, Russia

Abstract: Results of studying optoacoustic characteristics of pentaerythritol tetranitrate (PETN) specimens with inclusions of ultrafine aluminum particles ($100$ nm) are presented. Regularities of the increase of extinction coefficient $k_{\mathrm{ef}}$ and signal amplitude $U$ on a piezodetector by increasing laser-pulse fluence $H$ have been established. Estimates have been made, and it has been concluded that, during a laser pulse, heating of aluminum inclusions and a shell surrounding it occurs up to a gasification temperature and appear craters on a specimen's surface appear at $H>0.1$ J/cm$^2$.

Received: 31.10.2017

DOI: 10.21883/OS.2018.03.45661.255-17