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Article Dans Une Revue Physical Review E : Statistical, Nonlinear, and Soft Matter Physics Année : 2021

Laser astrophysics experiment on the amplification of magnetic fields by shock-induced interfacial instabilities

Takayoshi Sano
  • Fonction : Auteur
Shohei Tamatani
  • Fonction : Auteur
Kazuki Matsuo
  • Fonction : Auteur
King Fai Farley Law
  • Fonction : Auteur
Taichi Morita
Shunsuke Egashira
  • Fonction : Auteur
Masato Ota
  • Fonction : Auteur
Rajesh Kumar
Hiroshi Shimogawara
  • Fonction : Auteur
Yukiko Hara
  • Fonction : Auteur
Seungho Lee
Shohei Sakata
  • Fonction : Auteur
Keisuke Shigemori
Shinsuke Fujioka
Masakatsu Murakami
  • Fonction : Auteur
Youichi Sakawa
  • Fonction : Auteur

Résumé

Laser experiments are becoming established as tools for astronomical research that complement observations and theoretical modeling. Localized strong magnetic fields have been observed at a shock front of supernova explosions. Experimental confirmation and identification of the physical mechanism for this observation are of great importance in understanding the evolution of the interstellar medium. However, it has been challenging to treat the interaction between hydrodynamic instabilities and an ambient magnetic field in the laboratory. Here, we developed an experimental platform to examine magnetized Richtmyer-Meshkov instability (RMI). The measured growth velocity was consistent with the linear theory, and the magnetic-field amplification was correlated with RMI growth. Our experiment validated the turbulent amplification of magnetic fields associated with the shock-induced interfacial instability in astrophysical conditions. Experimental elucidation of fundamental processes in magnetized plasmas is generally essential in various situations such as fusion plasmas and planetary sciences.

Dates et versions

hal-03341165 , version 1 (10-09-2021)

Identifiants

Citer

Takayoshi Sano, Shohei Tamatani, Kazuki Matsuo, King Fai Farley Law, Taichi Morita, et al.. Laser astrophysics experiment on the amplification of magnetic fields by shock-induced interfacial instabilities. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2021, 104 (3), pp.035206. ⟨10.1103/PhysRevE.104.035206⟩. ⟨hal-03341165⟩
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