Magnetic field generation during intense laser channelling in underdense plasma

被引:8
|
作者
Smyth, A. G. [1 ]
Sarri, G. [1 ]
Vranic, M. [2 ]
Amano, Y. [3 ]
Doria, D. [1 ]
Guillaume, E. [2 ]
Habara, H. [3 ]
Heathcote, R. [4 ]
Hicks, G. [5 ]
Najmudin, Z. [5 ]
Nakamura, H. [5 ]
Norreys, P. A. [4 ]
Kar, S. [1 ]
Silva, L. O. [2 ]
Tanaka, K. A. [3 ]
Vieira, J. [2 ]
Borghesi, M. [1 ]
机构
[1] Queens Univ Belfast, Sch Math & Phys, Univ Rd, Belfast BT7 1NN, Antrim, North Ireland
[2] Univ Lisbon, Inst Super Tecn, GoLP IPFN, P-1049001 Lisbon, Portugal
[3] Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, Japan
[4] STFC Rutherford Appleton Lab, Didcot OX1 0QX, Oxon, England
[5] Imperial Coll London, Blackett Lab, Prince Consort Rd, London SW7 2BZ, England
基金
欧洲研究理事会; 英国工程与自然科学研究理事会; 英国科学技术设施理事会;
关键词
PREFORMED PLASMA; PULSE; ACCELERATORS; DYNAMICS; DENSITY;
D O I
10.1063/1.4953547
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
Channel formation during the propagation of a high-energy (120 J) and long duration (30 ps) laser pulse through an underdense deuterium plasma has been spatially and temporally resolved via means of a proton imaging technique, with intrinsic resolutions of a few mu m and a few ps, respectively. Conclusive proof is provided that strong azimuthally symmetric magnetic fields with a strength of around 0.5 MG are created inside the channel, consistent with the generation of a collimated beam of relativistic electrons. The inferred electron beam characteristics may have implications for the cone-free fast-ignition scheme of inertial confinement fusion. Published by AIP Publishing.
引用
收藏
页数:9
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