Shock dynamics and shock collision in foam layered targets

0547929 - FZÚ 2022 RIV GB eng J - Journal Article
Batani, K. - Aliverdiev, A. - Benocci, R. - Dezulian, R. - Amirova, A. - Krouský, Eduard - Pfeifer, Miroslav - Skála, Jiří - Dudžák, Roman - Nazarov, W. - Batani, D.
Shock dynamics and shock collision in foam layered targets.
High Power Laser Science and Engineering. Roč. 9, July (2021), č. článku e47. ISSN 2095-4719. E-ISSN 2052-3289
R&D Projects: GA MŠMT LTT17015; GA MŠMT(CZ) LM2018114
EU Projects: European Commission(XE) 654148 - LASERLAB-EUROPE
Institutional support: RVO:68378271
Keywords : foam * hydrodynamics simulations * self-emission diagnostics * shock chronometry * shock collision
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 5.943, year: 2021
Method of publishing: Open access

We present an experimental study of the dynamics of shocks generated by the interaction of a double-spot laser in different kinds of targets: simple aluminum foils and foam–aluminum layered targets. The experiment was performed using the Prague PALS iodine laser working at 0.44 µm wavelength and irradiance of a few 1015 W/cm2. Shock breakouts for pure Al and for foam-Al targets have been recorded using time-resolved self-emission diagnostics. Experimental results have been compared with numerical simulations. The shocks originating from two spots move forward and expand radially in the targets, finally colliding in the intermediate region and producing a very strong increase in pressure. Thisis particularly clear for the case of foam layered targets, where we also observed a delay of shock breakout and a spatial redistribution of the pressure. The influence of the foam layer doped with high-Z (Au) nanoparticles on the shock dynamics was also studied.
Permanent Link: http://hdl.handle.net/11104/0324082