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Laser interactions with low-density plastic foams

Published online by Cambridge University Press:  30 August 2005

J. LIMPOUCH,
N.N. DEMCHENKO,
S.YU. GUS'KOV,
A.I. GROMOV,
M. KALAL,
A. KASPERCZUK,
V.N. KONDRASHOV,
E. KROUSKY,
K. MASEK and
M. PFEIFER
...Show all authors
J. LIMPOUCH
Affiliation:
Czech Technical University in Prague, FNSPE, Prague, Czech RepublicInstitute of Physics, AS CR, Prague, Czech Republic
N.N. DEMCHENKO
Affiliation:
P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia
S.YU. GUS'KOV
Affiliation:
P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia
A.I. GROMOV
Affiliation:
P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia
M. KALAL
Affiliation:
Czech Technical University in Prague, FNSPE, Prague, Czech Republic
A. KASPERCZUK
Affiliation:
Institute of Plasma Physics & Laser Microfusion, Warsaw, Poland
V.N. KONDRASHOV
Affiliation:
Troitsk Institute of Innovation and Thermonuclear Research, Troitsk, Russia
E. KROUSKY
Affiliation:
Institute of Physics, AS CR, Prague, Czech Republic
K. MASEK
Affiliation:
Institute of Physics, AS CR, Prague, Czech Republic
M. PFEIFER
Affiliation:
Institute of Physics, AS CR, Prague, Czech Republic
P. PISARCZYK
Affiliation:
Warsaw University of Technology, ICS, Warsaw, Poland
T. PISARCZYK
Affiliation:
Institute of Plasma Physics & Laser Microfusion, Warsaw, Poland
K. ROHLENA
Affiliation:
Institute of Physics, AS CR, Prague, Czech Republic
V.B. ROZANOV
Affiliation:
P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia
M. SINOR
Affiliation:
Czech Technical University in Prague, FNSPE, Prague, Czech Republic
J. ULLSCHMIED
Affiliation:
Institute of Plasma Physics, AS CR, Prague, Czech Republic
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Abstract

Interactions of sub-nanosecond pulses of kJ-class iodine laser “PALS” with low-density foams and acceleration of Al foils by the pressure of the heated foam matter are investigated here, both experimentally and theoretically. X-ray streak camera is used for evaluation of the speed of energy transfer through the porous foam material. The shock-wave arrival on the rear side of the target is monitored by optical streak camera. Accelerated foil velocities, measured by three-frame optical interferometers, and shadowgraphs, reach up to 107 cm/s. The accelerated foil shape is smooth without any signature of small-scale structures present in the incident laser beam. Conversion efficiencies as high as 14% of the laser energy into the kinetic energy of Al foil are derived. Experimental results compare well with our two-dimensional hydrodynamics simulations and with an approximate analytical model.

Keywords

Laser-imprint smoothingLaser-produced plasmaLow-density plastic foamsShock wave propagationThermal transport

Information

Type
Research Article
Information
Laser and Particle Beams , Volume 23 , Issue 3 , September 2005, pp. 321 - 325
Copyright
© 2005 Cambridge University Press

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Footnotes

This paper was presented at the 28th ECLIM conference in Rome, Italy.

References

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