Inefficient Magnetic-Field Amplification in Supersonic Laser-Plasma Turbulence.
Phys Rev Lett
; 127(17): 175002, 2021 Oct 22.
Article
en En
| MEDLINE
| ID: mdl-34739267
ABSTRACT
We report a laser-plasma experiment that was carried out at the LMJ-PETAL facility and realized the first magnetized, turbulent, supersonic (Ma_{turb}≈2.5) plasma with a large magnetic Reynolds number (Rm≈45) in the laboratory. Initial seed magnetic fields were amplified, but only moderately so, and did not become dynamically significant. A notable absence of magnetic energy at scales smaller than the outer scale of the turbulent cascade was also observed. Our results support the notion that moderately supersonic, low-magnetic-Prandtl-number plasma turbulence is inefficient at amplifying magnetic fields compared to its subsonic, incompressible counterpart.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Año:
2021
Tipo del documento:
Article
País de afiliación:
Reino Unido