Energy penetration into arrays of aligned nanowires irradiated with relativistic intensities: Scaling to terabar pressures

被引：67

作者：

Bargsten, Clayton ^{[1
]}

Hollinger, Reed ^{[1
]}

Capeluto, Maria Gabriela ^{[2
]}

Kaymak, Vural ^{[3
]}

Pukhov, Alexander ^{[3
]}

Wang, Shoujun ^{[1
]}

Rockwood, Alex ^{[4
]}

Wang, Yong ^{[1
]}

Keiss, David ^{[4
]}

Tommasini, Riccardo ^{[5
]}

London, Richard ^{[5
]}

Park, Jaebum ^{[5
]}

Busquet, Michel ^{[6
]}

Klapisch, Marcel ^{[6
]}

Shlyaptsev, Vyacheslav N. ^{[1
]}

Rocca, Jorge J. ^{[1
,4
]}

机构：

[1] Colorado State Univ, Dept Elect & Comp Engn, Ft Collins, CO 80523 USA

[2] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina

[3] Heinrich Heine Univ Dusseldorf, Inst Theoret Phys, D-40225 Dusseldorf, Germany

[4] Colorado State Univ, Dept Phys, Ft Collins, CO 80523 USA

[5] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

[6] ARTEP Inc, Ellicott City, MD 21042 USA

来源：

SCIENCE ADVANCES | 2017年 / 3卷 / 01期

基金：

美国国家科学基金会;

关键词：

LASER-PULSES; PLASMAS; TARGETS;

D O I：

10.1126/sciadv.1601558

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Ultrahigh-energy density (UHED) matter, characterized by energy densities >1 x 10(8) J cm(-3) and pressures greater than a gigabar, is encountered in the center of stars and inertial confinement fusion capsules driven by the world's largest lasers. Similar conditions can be obtained with compact, ultrahigh contrast, femtosecond lasers focused to relativistic intensities onto targets composed of aligned nanowire arrays. We report the measurement of the key physical process in determining the energy density deposited in high-aspect-ratio nanowire array plasmas: the energy penetration. By monitoring the x-ray emission from buried Co tracer segments in Ni nanowire arrays irradiated at an intensity of 4x10(19) W cm(-2), we demonstrate energy penetration depths of several micrometers, leading to UHED plasmas of that size. Relativistic three-dimensional particle-in-cell simulations, validated by these measurements, predict that irradiation of nanostructures at intensities of >1 x 10(22) W cm(-2) will lead to a virtually unexplored extreme UHED plasma regime characterized by energy densities in excess of 8 x 10(10) J cm-3, equivalent to a pressure of 0.35 Tbar.

引用

页数：8

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