Magnetic Field Generation by the Rayleigh-Taylor Instability in Laser-Driven Planar Plastic Targets

被引：49

作者：

Gao, L. ^{[1
,2
]}

Nilson, P. M. ^{[1
,3
]}

Igumenschev, I. V. ^{[1
]}

Hu, S. X. ^{[1
]}

Davies, J. R. ^{[1
,2
,3
]}

Stoeckl, C. ^{[1
]}

Haines, M. G. ^{[4
]}

Froula, D. H. ^{[1
]}

Betti, R. ^{[1
,2
,3
,5
]}

Meyerhofer, D. D. ^{[1
,2
,3
,5
]}

机构：

[1] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA

[2] Univ Rochester, Dept Mech Engn, Rochester, NY 14623 USA

[3] Univ Rochester, Fus Sci Ctr Extreme States Matter, Rochester, NY 14623 USA

[4] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England

[5] Univ Rochester, Dept Phys & Astron, Rochester, NY 14623 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 11期

关键词：

INERTIAL CONFINEMENT FUSION; PROTON GENERATION; OMEGA LASER; PLASMAS; IRRADIATION; SOLIDS;

D O I：

10.1103/PhysRevLett.109.115001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Magnetic fields generated by the Rayleigh-Taylor instability were measured in laser-accelerated planar foils using ultrafast proton radiography. Thin plastic foils were irradiated with similar to 4-kJ, 2.5-ns laser pulses focused to an intensity of similar to 10(14) W/cm(2) on the OMEGA EP Laser System. Target modulations were seeded by laser nonuniformities and amplified during target acceleration by the Rayleigh-Taylor instability. The experimental data show the hydrodynamic evolution of the target and MG-level magnetic fields generated in the broken foil. The experimental data are in good agreement with predictions from 2-D magnetohydrodynamic simulations.

引用

页数：5

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