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Shock dynamics induced by double-spot laser irradiation of layered targets

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Aliverdiev A. A., Batani D., Amirova A. A., Benocci R., Dezulian R., Krouský E., Pfeifer M., Skala J., Dudzak R., Jakubowska K.

Nukleonika

2015

vol. 60

issue 2

213-219

We studied the interaction of a double-spot laser beam with targets using the Prague Asterix Laser System (PALS) iodine laser working at 0.44 μm wavelength and intensity of about 1015 W/cm2. Shock breakout signals were recorder using time-resolved self-emission from target rear side of irradiated targets. We compared the behavior of pure Al targets and of targets with a foam layer on the laser side. Results have been simulated using hydrodynamic numerical codes.

Electromagnetic pulses produced by expanding laser-produced Au plasma

81%

De Marco M., Cikhardt J., Krása J., Velyhan A., Pfeifer M., Krouský E., Klír D., Řezáč K., Limpouch J., Margarone D., Ullschmied J.

Nukleonika

2015

vol. 60

issue 2

239-243

The interaction of an intense laser pulse with a solid target produces large number of fast free electrons. This emission gives rise to two distinct sources of the electromagnetic pulse (EMP): the pulsed return current through the holder of the target and the outflow of electrons into the vacuum. A relation between the characteristics of laser-produced plasma, the target return current and the EMP emission are presented in the case of a massive Au target irradiated with the intensity of up to 3 × 1016 W/cm2. The emission of the EMP was recorded using a 12 cm diameter Moebius loop antennas, and the target return current was measured using a new type of inductive target probe (T-probe). The simultaneous use of the inductive target probe and the Moebius loop antenna represents a new useful way of diagnosing the laser–matter interaction, which was employed to distinguish between laser-generated ion sources driven by low and high contrast laser pulses.

Plastic plasma interaction with plasmas with growing atomic number

81%

Kasperczuk A., Pisarczyk T., Chodukowski T., Kalinowska Z., Gus’kov S., Demchenko N., Ullschmied J., Krousky E., Pfeifer M., Skala J., Klir D., Kravarik J., Kubes P., Cikhardt J., Rezac K., Pisarczyk P.

Open Physics

2013

vol. 11

issue 5

575-579

This paper describes the investigation of the influence of target material atomic number (Z) on the laser-produced plasma pressure. For this reason, several target materials representing a wide range of atomic numbers (Z = 3.5 - 73), i.e. plastic (CH), Al, Cu, Ag, and Ta, were used. The results presented show that the plasma pressure decreases with growing atomic number but in a limited range of Z only. For higher Z, starting approximately from Z = 47 (Ag), the plasma pressure becomes constant, as confirmed by interferometric measurements and x-ray plasma imaging.

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2 Nukleonika

1 Open Physics

2 2015

1 2013

3 Pfeifer M.

2 Cikhardt J.

2 Krouský E.

2 Skala J.

2 Ullschmied J.

1 Aliverdiev A. A.

1 Amirova A. A.

1 Batani D.

1 Benocci R.

1 Chodukowski T.

1 De Marco M.

1 Demchenko N.

1 Dezulian R.

1 Dudzak R.

1 Gus’kov S.

1 Jakubowska K.

1 Kalinowska Z.

1 Kasperczuk A.

1 Klir D.

1 Klír D.

1 Kravarik J.

1 Krousky E.

1 Krása J.

1 Kubes P.

1 Limpouch J.

1 Margarone D.

1 Pisarczyk P.

1 Pisarczyk T.

1 Rezac K.

1 Velyhan A.

1 Řezáč K.

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Shock dynamics induced by double-spot laser irradiation of layered targets

Electromagnetic pulses produced by expanding laser-produced Au plasma

Plastic plasma interaction with plasmas with growing atomic number