Femtosecond laser-plasma interaction with prepulse-generated liquid metal microjets

被引：21

作者：

Uryupina, D. S. ^{[1
]}

Ivanov, K. A. ^{[1
]}

Brantov, A. V. ^{[2
]}

Savel'ev, A. B. ^{[1
]}

Bychenkov, V. Yu ^{[2
]}

Povarnitsyn, M. E. ^{[3
]}

Volkov, R. V. ^{[1
]}

Tikhonchuk, V. T. ^{[4
]}

机构：

[1] Moscow MV Lomonosov State Univ, Ctr Int Laser, Moscow 119991, Leninskie Gory, Russia

[2] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia

[3] Russian Acad Sci, Joint Inst High Temp, Moscow 125412, Russia

[4] Univ Bordeaux, CNRS, CEA, CELIA, F-33405 Talence, France

来源：

PHYSICS OF PLASMAS | 2012年 / 19卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

X-RAY PULSES; SURFACE; IRRADIATION; ABLATION; ENERGY; KHZ;

D O I：

10.1063/1.3675871

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：

Ultrashort laser pulse interaction with a microstructured surface of a melted metal is a promising source of hard x-ray radiation. Microstructuring is achieved by a weak prepulse that produces narrow high-density microjets. As an x-ray source, the interaction of the main laser pulse with such jets is shown to be nearly two orders of magnitude more efficient than the interaction with ordinary metal targets. This paper presents the results of optical and x-ray studies of laser-plasma interaction physics under such conditions supported by numerical simulations of microjet formation and fast-electron generation. (C) 2012 American Institute of Physics. [doi: 10.1063/1.3675871]

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