Spherical shock in the presence of an external magnetic field

8th International Conference on Inertial Fusion Sciences and Applications

Kuramitsu, Y.^1 ; Matsukiyo, S.^2 ; Isayama, S.^2 ; Harada, D.^2 ; Oyama, T.^2 ; Fujino, R.^2 ; Sakawa, Y.^3 ; Morita, T.^3 ; Yamaura, Y.^3 ; Ishikawa, T.^3 ; Moritaka, T.^3 ; Sano, T.^3 ; Tomita, K.^4 ; Shimoda, R.^4 ; Sato, Y.^4 ; Uchino, K.^4 ; Pelka, A.^5 ; Crowston, R.^6 ; Woolsey, N.^6 ; Gregori, G.^7 ; Koenig, M.^8 ; Yuan, D.W.^9 ; Yin, C.L.^9 ; Li, Y.T.^9 ; Zhang, K.^10 ; Zhong, J.Y.^10 ; Wang, F.L.^10 ; Ohnishi, N.^11 ; Nagamine, K.^12 ; Yoneda, H.^12 ; Takabe, H.^3

Department of Physics, National Central University, Jhongli, Taiwan^1

Department of Earth System Science and Technology, Kyushu University, Kasuga, Japan^2

Institute of Laser Engineering, Osaka University, Suita, Japan^3

Department of Applied Science for Electronics and Materials, Kyushu University, Kasuga, Japan^4

Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany^5

Department of Physics, University of York, York, United Kingdom^6

Department of Physics, University of Oxford, Oxford, United Kingdom^7

Laboratoire pour l'Utilisation des Lasers Intenses, Ecole Polytechnique, Palaiseau, France^8

Institute of Physics, Chinese Academy of Sciences, China

(10) Institution National Astrophysical Observatories, CAS, China

(11) Department of Aerospace Engineering, Tohoku University, Sendai, Japan

(12) University of Electro-Communications, Tokyo, Japan^9

关键词: Astrophysical plasma;    Collisionless shocks;    Expanding plasmas;    External magnetic field;    Laboratory experiments;    Local observations;    Shock propagation;    Supernova remnants;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/688/1/012056/pdf
DOI  :  10.1088/1742-6596/688/1/012056

来源: IOP

【 摘 要 】

We investigate spherical collisionless shocks in the presence of an external magnetic field. Spherical collisionless shocks are common resultant of interactions between a expanding plasma and a surrounding plasma, such as the solar wind, stellar winds, and supernova remnants. Anisotropies often observed in shock propagations and their emissions, and it is widely believed a magnetic field plays a major role. Since the local observations of magnetic fields in astrophysical plasmas are not accessible, laboratory experiments provide unique capability to investigate such phenomena. We model the spherical shocks in the universe by irradiating a solid spherical target surrounded by a plasma in the presence of a magnetic field. We present preliminary results obtained by shadowgraphy.