Plastic plasma as a compressor of aluminum plasma at the PALS experiment

0375048 - ÚFP 2013 RIV US eng J - Journal Article
Kasperczuk, A. - Pisarczyk, T. - Chodukowski, T. - Kalinowska, Z. - Gus'kov, S. Yu. - Demchenko, N. N. - Klír, D. - Kravárik, J. - Kubeš, P. - Řezáč, K. - Ullschmied, Jiří - Krouský, Eduard - Pfeifer, Miroslav - Rohlena, Karel - Skála, Jiří - Pisarczyk, P.
Plastic plasma as a compressor of aluminum plasma at the PALS experiment.
Laser and Particle Beams. Roč. 30, č. 1 (2012), s. 1-7. ISSN 0263-0346. E-ISSN 1469-803X
R&D Projects: GA MŠMT(CZ) LC528; GA MŠMT(CZ) 7E09092
Institutional research plan: CEZ:AV0Z20430508; CEZ:AV0Z10100523
Keywords : Atomic number * Electron density distribution * Interaction of plasmas * Plasma pressure * Target irradiation * Plasma jets
Subject RIV: BH - Optics, Masers, Lasers; BM - Solid Matter Physics ; Magnetism (FZU-D)
Impact factor: 2.016, year: 2012

In our earlier papers, we demonstrated that plasma pressure decreases with the growing atomic number of the target material. That experimentally confirmed fact brought about a question whether it would be possible to collimate the Al plasma outflow by using plastic plasma as a compressor. To prove that idea we used in our next experiments a plastic target with an Al cylindrical insert of 400 mu m in diameter. The measurements were carried out at the Prague Asterix Laser System iodine laser facility. The laser provided a 250 ps (full width at half maximum (FWHM)) pulse with energy of 130 J at the third harmonic frequency (lambda(3) = 0.438 mu m). The focal spot diameters (Phi L) 800, 1000, and 1200 mu m ensured predominance of the plastic plasma amount high enough for the effective Al plasma compression. To study the Al plasma stream propagation and its interaction with plastic plasma a three-frame interferometric system and an X-ray camera were used.
Permanent Link: http://hdl.handle.net/11104/0207815