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Shock-wave physics experiments with high-power proton beams

Published online by Cambridge University Press:  09 March 2009

K. Baumung,
H.J. Bluhm,
B. Goel,
P. Hoppé,
H.U. Karow,
D. Rusch,
V.E. Fortov,
G.I. Kanel,
S.V. Razorenov and
A.V. Utkin
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K. Baumung
Affiliation:
Forschungszentrum Karlsruhe, P.O. Box 3640, 76021 Karlsruhe, Germany
H.J. Bluhm
Affiliation:
Forschungszentrum Karlsruhe, P.O. Box 3640, 76021 Karlsruhe, Germany
B. Goel
Affiliation:
Forschungszentrum Karlsruhe, P.O. Box 3640, 76021 Karlsruhe, Germany
P. Hoppé
Affiliation:
Forschungszentrum Karlsruhe, P.O. Box 3640, 76021 Karlsruhe, Germany
H.U. Karow
Affiliation:
Forschungszentrum Karlsruhe, P.O. Box 3640, 76021 Karlsruhe, Germany
D. Rusch
Affiliation:
Forschungszentrum Karlsruhe, P.O. Box 3640, 76021 Karlsruhe, Germany
V.E. Fortov
Affiliation:
Russian Academy of Sciences, Institute of Chemical Physics, Chernogolovka, 142432, Russia
G.I. Kanel
Affiliation:
Russian Academy of Sciences, Institute of Chemical Physics, Chernogolovka, 142432, Russia
S.V. Razorenov
Affiliation:
Russian Academy of Sciences, Institute of Chemical Physics, Chernogolovka, 142432, Russia
A.V. Utkin
Affiliation:
Russian Academy of Sciences, Institute of Chemical Physics, Chernogolovka, 142432, Russia
O.Yu. Vorobjev
Affiliation:
Russian Academy of Sciences, Institute of Chemical Physics, Chernogolovka, 142432, Russia
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Abstract

At the Karlsruhe Light Ion Facility (KALIF) high-power proton beams with power densities up to ∼ 1 TW/cm2 are generated depositing up to 40 kJ of ion energy in a focal spot of 6∼8-mm diameter. With peak proton energies of ∼ 1.7 MeV, specific power densities of up to 200 TW/g and energy densities of several MJ/g can be realized. This is a regime in which experiments providing information on the equation of state (EOS), dynamics of the beam interaction with condensed targets, and properties of solids and plasma at high-energy densities are of particular interest. In the present paper we report on shock-wave experiments using solid targets and high-resolution laser-Doppler velocimetry. The empirical data provided are used to verify code simulations and the used EOS-data in these calculations, to investigate the beam-target interaction, and to perform series of shock-wave measurements of properties of different materials. The ∼40-ns FWHM proton beam can be used to generate, by material ablation or impact of ablatively accelerated flyers, intense shock waves, permitting the investigation of shock compressibility, dynamic failure of solids under nanosecond load duration, phase transitions, and viscosity at strain rates up to ∼108 s-1. Recently an improved line-imaging velocimeter was set up to measure the spatial velocity variation with a maximum resolution of < 10 μm, opening the possibility to address new issues like growth of instabilities or local dynamics of the spall fracture.

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Type
Research Article
Information
Laser and Particle Beams , Volume 14 , Issue 2 , June 1996, pp. 181 - 209
Copyright
Copyright © Cambridge University Press 1996

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