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

被引：2

作者：

Dhareshwar, L. J. ^{[1
]}

Gupta, N. K. ^{[1
]}

Chaurasia, S. ^{[1
]}

Ayyub, P. ^{[2
]}

Kulkarni, N. ^{[2
]}

Badziak, J. ^{[3
]}

Pisarczyk, T. ^{[3
]}

Kasperczuk, A. ^{[3
]}

Parys, P. ^{[3
]}

Rosinski, M. ^{[3
]}

Wolowski, J. ^{[3
]}

Krousky, E. ^{[4
]}

Krasa, J. ^{[4
]}

Masek, K. ^{[4
]}

Pfeifer, M. ^{[4
]}

Skala, J. ^{[4
]}

Ullschmied, J. ^{[4
]}

Velyhan, A. ^{[4
]}

Margarone, D. ^{[4
]}

Mezzasalma, A. ^{[5
]}

Pisarczyk, P. ^{[6
]}

机构：

[1] Bhabha Atom Res Ctr, Mumbai, Maharashtra, India

[2] Tata Inst Fundamental Res, Mumbai, Maharashtra, India

[3] Inst Plasma Phys & Laser Microfus, PL-01497 Warsaw, Poland

[4] PALS Res Ctr ASCR, Prague 1822 8, Czech Republic

[5] Univ Messina, Messina, Italy

[6] Warsaw Univ Technol, ICS, PL-00661 Warsaw, Poland

来源：

SIXTH INTERNATIONAL CONFERENCE ON INERTIAL FUSION SCIENCES AND APPLICATIONS, PARTS 1-4 | 2010年 / 244卷

关键词：

X-RAY PULSES;

D O I：

10.1088/1742-6596/244/2/022018

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Presence of nano-particles on target surface has been observed to lead to increased laser absorption of laser pulse in plasma. Therefore, a coating of nano-particles on foil targets could lead to an enhanced ablative acceleration. The work presented in this paper concerns this possibility. The results of experiments performed with PALS laser system (125 J, similar to 250 ps at 1.3 mu m) with a focused intensity of about 10(14) W/cm(2) are presented. 15 mu m 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.

引用

页数：4

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