Effect of gold nano-particle layers on ablative acceleration of plastic foil targets

0352045 - FZÚ 2011 RIV GB eng J - Článek v odborném periodiku
Dhareshwar, L.J. - Gupta, N.K. - Chaurasia, S. - Ayyub, P. - Kulkarni, N. - Badziak, J. - Pisarczyk, T. - Kasperczuk, A. - Parys, P. - Rosinski, M. - Wolowski, J. - Krouský, Eduard - Krása, Josef - Mašek, Karel - Pfeifer, Miroslav - Skála, Jiří - Ullschmied, Jiří - Velyhan, Andriy - Margarone, Daniele - Mezzasalma, A. - Pisarczyk, P.
Effect of gold nano-particle layers on ablative acceleration of plastic foil targets.
Journal of Physics: Conference Series. Roč. 244, č. 2 (2010), 022018/1-022018/8. ISSN 1742-6588. E-ISSN 1742-6596
Grant CEP: GA MŠMT(CZ) LC528; GA MŠMT(CZ) 7E08094
Výzkumný záměr: CEZ:AV0Z10100523; CEZ:AV0Z20430508
Klíčová slova: laser pulse absorption * nano-particle coating * lateral thermal conduction
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech

Presence of nano-particles on target surface has been observed to lead to increased laser pulse absorption in plasma. Therefore, a coating of nano-particles on foil targets could lead to an enhanced ablative acceleration. The results of experiments performed with PALS laser system (125 J, ~250 ps at 1.3 μm) with a focused intensity of about 1014W/cm2 are presented. 15 μm thick Polyethylene teraphthalate (C10H8O4)n or PET foils show an almost 40% increase in target movement when coated with a layer of gold nano-particles. Comparison between targets with coating of bulk gold and nano-gold shows about 15% higher target movement in gold nano-particle coated PET targets as compared to bulk gold coating. This result is a clear indication of enhanced laser energy absorption in targets with nano-structured surface of gold. We also present evidence to show the effect of nano-particle coating on lateral thermal conduction.
Trvalý link: http://hdl.handle.net/11104/0191647