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Title: Negative pressure and spallation in graphite targets under nano- and picosecond laser irradiation

Abstract

We present the results of experiments on the spallation phenomena in graphite targets under shock-wave nano- and picosecond irradiation, which have been performed on Kamerton-T (GPI, Moscow, Russia) and PHELIX (GSI, Darmstadt, Germany) laser facilities. In the range of the strain rates of 10{sup 6} – 10{sup 7} s{sup -1}, the data on the dynamic mechanical strength of the material at rapure (spallation) have been for the first time obtained. With a maximal strain rate of 1.4 × 10{sup 7} s{sup -1}, the spall strength of 2.1 GPa is obtained, which constitutes 64% of the theoretical ultimate tensile strength of graphite. The effect of spallation is observed not only on the rear side of the target, but also on its irradiated (front) surface. With the use of optical and scanning electron microscopes, the morphology of the front and rear surfaces of the targets is studied. By means of Raman scattering of light, the graphite structure both on the target front surface under laser exposure and on its rear side in the spall zone is investigated. A comparison of the dynamic strength of graphite and synthetic diamond is performed. (extreme light fields and their applications)

Authors:
;  [1]; ; ;  [2]; ;  [3];  [4];  [5]
  1. Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow (Russian Federation)
  2. A M Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
  3. Goethe University Frankfurt am Main (Germany)
  4. GSI Helmholtzzentrum für Schwerionenforschung GmbH, Germany, 64291 Darmstadt, Planckstraße, 1 (Germany)
  5. Technische Universität Darmstadt, Germany, 64289 Darmstadt, Karolinenplatz, 5 (Germany)
Publication Date:
OSTI Identifier:
22551250
Resource Type:
Journal Article
Journal Name:
Quantum Electronics (Woodbury, N.Y.)
Additional Journal Information:
Journal Volume: 45; Journal Issue: 5; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7818
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DIAMONDS; GRAPHITE; IRRADIATION; LASER RADIATION; MORPHOLOGY; PRESSURE RANGE GIGA PA; RAMAN EFFECT; SCANNING ELECTRON MICROSCOPY; SHOCK WAVES; SPALLATION; STRAIN RATE; SURFACES; TENSILE PROPERTIES; VISIBLE RADIATION

Citation Formats

Belikov, R S, Khishchenko, K V, Krasyuk, I K, Semenov, A Yu, Stuchebryukhov, I A, Rinecker, T, Schoenlein, A, Rosmej, O N, and Tomut, M. Negative pressure and spallation in graphite targets under nano- and picosecond laser irradiation. United States: N. p., 2015. Web. doi:10.1070/QE2015V045N05ABEH015759.
Belikov, R S, Khishchenko, K V, Krasyuk, I K, Semenov, A Yu, Stuchebryukhov, I A, Rinecker, T, Schoenlein, A, Rosmej, O N, & Tomut, M. Negative pressure and spallation in graphite targets under nano- and picosecond laser irradiation. United States. doi:10.1070/QE2015V045N05ABEH015759.
Belikov, R S, Khishchenko, K V, Krasyuk, I K, Semenov, A Yu, Stuchebryukhov, I A, Rinecker, T, Schoenlein, A, Rosmej, O N, and Tomut, M. Sun . "Negative pressure and spallation in graphite targets under nano- and picosecond laser irradiation". United States. doi:10.1070/QE2015V045N05ABEH015759.
@article{osti_22551250,
title = {Negative pressure and spallation in graphite targets under nano- and picosecond laser irradiation},
author = {Belikov, R S and Khishchenko, K V and Krasyuk, I K and Semenov, A Yu and Stuchebryukhov, I A and Rinecker, T and Schoenlein, A and Rosmej, O N and Tomut, M},
abstractNote = {We present the results of experiments on the spallation phenomena in graphite targets under shock-wave nano- and picosecond irradiation, which have been performed on Kamerton-T (GPI, Moscow, Russia) and PHELIX (GSI, Darmstadt, Germany) laser facilities. In the range of the strain rates of 10{sup 6} – 10{sup 7} s{sup -1}, the data on the dynamic mechanical strength of the material at rapure (spallation) have been for the first time obtained. With a maximal strain rate of 1.4 × 10{sup 7} s{sup -1}, the spall strength of 2.1 GPa is obtained, which constitutes 64% of the theoretical ultimate tensile strength of graphite. The effect of spallation is observed not only on the rear side of the target, but also on its irradiated (front) surface. With the use of optical and scanning electron microscopes, the morphology of the front and rear surfaces of the targets is studied. By means of Raman scattering of light, the graphite structure both on the target front surface under laser exposure and on its rear side in the spall zone is investigated. A comparison of the dynamic strength of graphite and synthetic diamond is performed. (extreme light fields and their applications)},
doi = {10.1070/QE2015V045N05ABEH015759},
journal = {Quantum Electronics (Woodbury, N.Y.)},
issn = {1063-7818},
number = 5,
volume = 45,
place = {United States},
year = {2015},
month = {5}
}