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Title: Optoheterodyne Doppler measurements of the ballistic expansion of the products of the shock wave-induced surface destruction: Experiment and theory

Abstract

The results of optoheterodyne Doppler measurements of the ballistic expansion of the products of surface destruction under shock-wave loading are presented. The possibility of determining the physical characteristics of a rapidly flying dust cloud, including the microparticle velocities, the microparticle sizes, and the areal density of the dust cloud, is shown. A compact stand for performing experiments on shock-wave loading of metallic samples is described. Shock-wave loading is performed by a 100-µm-thick tantalum flyer plate accelerated to a velocity of 2.8 km/s. As the samples, lead plates having various thicknesses and the same surface roughness are used. At a shock-wave pressure of 31.5 GPa, the destruction products are solid microparticles about 50 µm in size. At a pressure of 42 and 88 GPa, a liquid-drop dust cloud with a particle size of 10–15 µm is formed. To interpret the spectral data on the optoheterodyne Doppler measurements of the expansion of the surface destruction products (spalled fragments, dust microparticles), a transport equation for the function of mutual coherence of a multiply scattered field is used. The Doppler spectra of a backscattered signal are calculated with the model developed for the dust cloud that appears when a shock wave reaches the samplemore » surface at the parameters that are typical of an experimental situation. Qualitative changes are found in the spectra, depending on the optical thickness of the dust cloud. The obtained theoretical results are in agreement with the experimental data.« less

Authors:
 [1]; ; ; ;  [2]; ;  [1];  [2];  [1]; ;  [2]
  1. All-Russia Research Institute of Automatics (Russian Federation)
  2. Russian Federal Nuclear Center, All-Russia Research Institute of Experimental Physics (VNIIEF) (Russian Federation)
Publication Date:
OSTI Identifier:
22617252
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 122; Journal Issue: 6; Other Information: Copyright (c) 2016 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DENSITY; DOPPLER EFFECT; EXPANSION; LIQUIDS; PARTICLE SIZE; PRESSURE RANGE GIGA PA; ROUGHNESS; SHOCK WAVES; SOLIDS; SPECTRA; SURFACES; THICKNESS; VELOCITY

Citation Formats

Andriyash, A. V., Astashkin, M. V., Baranov, V. K., Golubinskii, A. G., Irinichev, D. A., Kondrat’ev, A. N., E-mail: an.kondratev@physics.msu.ru, Kuratov, S. E., Mazanov, V. A., Rogozkin, D. B., Stepushkin, S. N., and Khatunkin, V. Yu.. Optoheterodyne Doppler measurements of the ballistic expansion of the products of the shock wave-induced surface destruction: Experiment and theory. United States: N. p., 2016. Web. doi:10.1134/S1063776116050150.
Andriyash, A. V., Astashkin, M. V., Baranov, V. K., Golubinskii, A. G., Irinichev, D. A., Kondrat’ev, A. N., E-mail: an.kondratev@physics.msu.ru, Kuratov, S. E., Mazanov, V. A., Rogozkin, D. B., Stepushkin, S. N., & Khatunkin, V. Yu.. Optoheterodyne Doppler measurements of the ballistic expansion of the products of the shock wave-induced surface destruction: Experiment and theory. United States. doi:10.1134/S1063776116050150.
Andriyash, A. V., Astashkin, M. V., Baranov, V. K., Golubinskii, A. G., Irinichev, D. A., Kondrat’ev, A. N., E-mail: an.kondratev@physics.msu.ru, Kuratov, S. E., Mazanov, V. A., Rogozkin, D. B., Stepushkin, S. N., and Khatunkin, V. Yu.. 2016. "Optoheterodyne Doppler measurements of the ballistic expansion of the products of the shock wave-induced surface destruction: Experiment and theory". United States. doi:10.1134/S1063776116050150.
@article{osti_22617252,
title = {Optoheterodyne Doppler measurements of the ballistic expansion of the products of the shock wave-induced surface destruction: Experiment and theory},
author = {Andriyash, A. V. and Astashkin, M. V. and Baranov, V. K. and Golubinskii, A. G. and Irinichev, D. A. and Kondrat’ev, A. N., E-mail: an.kondratev@physics.msu.ru and Kuratov, S. E. and Mazanov, V. A. and Rogozkin, D. B. and Stepushkin, S. N. and Khatunkin, V. Yu.},
abstractNote = {The results of optoheterodyne Doppler measurements of the ballistic expansion of the products of surface destruction under shock-wave loading are presented. The possibility of determining the physical characteristics of a rapidly flying dust cloud, including the microparticle velocities, the microparticle sizes, and the areal density of the dust cloud, is shown. A compact stand for performing experiments on shock-wave loading of metallic samples is described. Shock-wave loading is performed by a 100-µm-thick tantalum flyer plate accelerated to a velocity of 2.8 km/s. As the samples, lead plates having various thicknesses and the same surface roughness are used. At a shock-wave pressure of 31.5 GPa, the destruction products are solid microparticles about 50 µm in size. At a pressure of 42 and 88 GPa, a liquid-drop dust cloud with a particle size of 10–15 µm is formed. To interpret the spectral data on the optoheterodyne Doppler measurements of the expansion of the surface destruction products (spalled fragments, dust microparticles), a transport equation for the function of mutual coherence of a multiply scattered field is used. The Doppler spectra of a backscattered signal are calculated with the model developed for the dust cloud that appears when a shock wave reaches the sample surface at the parameters that are typical of an experimental situation. Qualitative changes are found in the spectra, depending on the optical thickness of the dust cloud. The obtained theoretical results are in agreement with the experimental data.},
doi = {10.1134/S1063776116050150},
journal = {Journal of Experimental and Theoretical Physics},
number = 6,
volume = 122,
place = {United States},
year = 2016,
month = 6
}
  • It is shown that heating the surface of an anode and of a gas layer adjacent to it by radiation of a current sheath is the cause of the runaway of part of the current-sheath front adjacent to the anode. The evolution of this process is also the cause of the destruction of the current sheath of the plasma focus.
  • Velocity interferometer system for any reflectors (VISARs), are becoming increasingly popular in the measurement of shock waves in solids and liquids. VISAR techniques are used in measurements of transit time, speed of shock waves in flight in transparent media [L. C. Chhabildas and J. L. Wise, in Proceedings of the 4th APS Topical Conference on Shock Waves in Condensed Matter, Spokane, Washington, 1985, edited by Y. M. Gupta (Plenum, New York, 1986); P. M. Celliers , Appl. Phys. Lett. 73, 1320 (1998)], and in measurements of particle velocity. However, in cases where shock compression or release may change the indexmore » of refraction n+ik of the material being studied, the VISAR technique must be applied with care. Changes in n and k introduce phase shifts into the VISAR results that are not associated with changes in velocity. This paper presents a derivation of the theoretical output of a line VISAR that includes the effects of changing n and k and an experimental observation of a non-Doppler shift related effect.« less
  • Abstract not provided.
  • An experimental study has been performed to examine the physical characteristics of pharmaceutical products, such as tablet, by employing an emission plasma induced by Nd-YAG laser at a low pressure of Helium gas. The hardness of tablet is one of the parameters that examined during the production process for standard quality of pharmaceutical products. In the Laser-Induced Shock Wave Plasma Spectroscopy (LISPS), the shock wave has a significant role in inducing atomic excitation. It was known that, the speed of the shock wavefront depends on the hardness of the sample, and it correlates with the ionization rate of the ablatedmore » atoms. The hardness of the tablet is examined using the intensity ratio between the ion of Mg (II) 275.2 nm and the neutral of Mg (I) 285.2 nm emission lines detected from the laser-induced plasma. It was observed that the ratio changes with respect to the change in the tablet hardness, namely the ratio is higher for the hard tablet. Besides the ratio measurements, we also measured the depth profile of a tablet by focusing 60 shots of irradiation of laser light at a fixed position on the surface of the tablet. It was found that the depth profile varies differently with the hardness of the tablet. These experiment results show that the technique of LISPS can be applied to examine the quality of pharmaceutical products.« less