Efficiency of ablative loading of material upon the fast-electron transfer of absorbed laser energy

Journal Article · Wed May 31 00:00:00 EDT 2006 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2006V036N05ABEH013242· OSTI ID:21456889

Gus'kov, Sergei Yu ^[1]; Kasperczuk, A; Pisarczyk, T; Borodziuk, S ^[2]; Kalal, M; Limpouch, J ^[3]; Ullschmied, J ^[4]; Krousky, E; Masek, K; Pfeifer, M; Rohlena, K; Skala, J ^[5]; Pisarczyk, P ^[6]

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1. P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
2. Institute of Plasma Physics and Laser Microfusion, Warsaw (Poland)
3. Czech Technical University, Prague (Czech Republic)
4. Institute of Plasma Physics AS CR, Prague (Czech Republic)
5. Institute of Physics, Czech Academy of Sciences, Prague (Czech Republic)
6. Warsaw University of Technology, Warsaw (Poland)

We present the results of experiments on the short-term irradiation of a solid material by a laser beam. The data testify to a rise in efficiency of the energy transfer from the laser pulse to a shock wave due to the fast-electron energy transfer. The experiments were performed with massive aluminium targets on the PALS iodine laser, whose pulse duration (0.4 ns) was much shorter than the time of shock decay and crater formation in the target (50-200 ns). The irradiation experiments were carried out using the fundamental laser harmonic (1.315 {mu}m) with an energy of 360 J. The greater part of the experiments were performed for the radiation intensity exceeding 10{sup 15} W cm{sup -2}, which corresponded to the efficient generation of fast electrons under the conditions where the relatively long-wavelength iodine-laser radiation was employed. The irradiation intensity was varied by varying the laser beam radius for a specified pulse energy. (interaction of laser radiation with matter. laser plasma)

• OSTI ID: 21456889
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 36, Issue 5; Other Information: DOI: 10.1070/QE2006v036n05ABEH013242; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABLATION
ALUMINIUM
ELECTRON TRANSFER
ELECTRONS
ENERGY EFFICIENCY
ENERGY TRANSFER
IODINE LASERS
IRRADIATION
LASER RADIATION
PHOTON BEAMS
PULSES
SHOCK WAVES
SOLIDS
WAVELENGTHS
BEAMS
EFFICIENCY
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
GAS LASERS
LASERS
LEPTONS
METALS
RADIATIONS