Formation and evolution of post-solitons following a high intensity laser-plasma interaction with a low-density foam target

被引：3

作者：

Blackman, David R. ^{[1
,4
]}

Adak, Amitava ^{[2
,6
]}

Singh, Prashant K. ^{[2
]}

Lad, Amit D. ^{[2
]}

Chatterjee, Gourab ^{[2
]}

Ridgers, Christopher P. ^{[1
]}

Del Sorbo, Dario ^{[1
]}

Trines, Raoul M. G. M. ^{[3
]}

Robinson, A. P. L. ^{[3
]}

Nazarov, Wigen ^{[5
]}

Ravindra Kumar, G. ^{[2
]}

Pasley, John ^{[1
,3
]}

机构：

[1] Univ York, York Plasma Inst, Dept Phys, York YO10 5DD, N Yorkshire, England

[2] Tata Inst Fundamental Res, Dr Homi Bhabha Rd, Mumbai 400005, Maharashtra, India

[3] STFC Rutherford Appleton Lab, Cent Laser Facil, Harwell Campus, Didcot OX11 0QX, Oxon, England

[4] Univ Calif San Diego, Mech & Aerosp Engn, 9500 Gilman Dr, La Jolla, CA 92093 USA

[5] St Andrews Univ, Sch Chem, St Andrews KY16 9ST, Fife, Scotland

[6] Indian Sch Mines, Indian Inst Technol, Dept Phys, Dhanbad 826004, Jharkhand, India

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2021年 / 63卷 / 07期

基金：

英国工程与自然科学研究理事会; 美国国家科学基金会; 欧洲研究理事会;

关键词：

laser plasma Interaction; laser interaction with foam; soliton formation and evolution; pump-probe Doppler spectroscopy; RELATIVISTIC ELECTROMAGNETIC SOLITONS; PULSE; RADIATION; LIGHT;

D O I：

10.1088/1361-6587/abf85c

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：

The formation and evolution of post-solitons has been discussed for quite some time both analytically and through the use of particle-in-cell (PIC) codes. It is however only recently that they have been directly observed in laser-plasma experiments. Relativistic electromagnetic (EM) solitons are localised structures that can occur in collisionless plasmas. They consist of a low-frequency EM wave trapped in a low electron number-density cavity surrounded by a shell with a higher electron number-density. Here we describe the results of an experiment in which a 100 TW Ti:sapphire laser (30 fs, 800 nm) irradiates a 0.03 gcm(-3) TMPTA foam target with a focused intensity I-1 = 9.5 x 10(17) Wcm(-2). A third harmonic (lambda(probe) similar or equal to 266 nm) probe is employed to diagnose plasma motion for 25 ps after the main pulse interaction via Doppler-Spectroscopy. Both radiation-hydrodynamics and 2D PIC simulations are performed to aid in the interpretation of the experimental results. We show that the rapid motion of the probe critical-surface observed in the experiment might be a signature of post-soliton wall motion.

引用

页数：11

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