Journal
PHYSICAL REVIEW LETTERS
Volume 127, Issue 17, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.127.175002
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Funding
- Engineering and Physical Sciences Research Council [EP/M022331/1, EP/N014472/1, EP/RO34737/1]
- U.S. Department of Energy (DOE) National Nuclear Security Administration (NNSA) [536203, B632670, 57789]
- LLNL [DE-NA0002724, DE-NA0003605, DE-NA0003934]
- University of Chicago [DE-NA0003539, DE-NA0003856]
- University of Rochester
- U.S. DOE Office of Science Fusion Energy Sciences [DE-SC0016566]
- National Science Foundation [PHY-1619573, PHY-2033925, AST-1908551]
- France And Chicago Collaborating in The Sciences (FACCTS) Program of the National Research Foundation of Korea [2016R1A5A1013277, 2020R1A2C2102800]
- Office of Science of the U.S. DOE [DE-AC02-06CH11357]
- AWE plc.
- Conseil Regional d'Aquitaine
- French Ministry of Research
- European Union
- French Agence Nationale de la Recherche [ANR-10-EQPX-42-01]
- Association Lasers et Plasmas
- CEA
- EPSRC [EP/N014472/1, EP/M022331/1] Funding Source: UKRI
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Our experiment at the LMJ-PETAL facility achieved the first magnetized, turbulent, supersonic plasma with a large magnetic Reynolds number (Rm 45) in the laboratory. However, the amplification of initial seed magnetic fields was only moderate and not dynamically significant, with a notable absence of magnetic energy at scales smaller than the outer scale of the turbulent cascade. Our results suggest that moderately supersonic, low-magnetic-Prandtl-number plasma turbulence is less efficient at amplifying magnetic fields compared to its subsonic, incompressible counterpart.
We report a laser-plasma experiment that was carried out at the LMJ-PETAL facility and realized the first magnetized, turbulent, supersonic (Maturb 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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