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- Ryu, Dongsu
- Astrophysics Lab.
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Inefficient Magnetic-Field Amplification in Supersonic Laser-Plasma Turbulence
- Author(s)
- Bott, A. F. A., Chen, L., Boutoux, G., Caillaud, T., Duval, A., Koenig, M., Khiar, B., Lantuéjoul, I., Le-Deroff, L., Reville, B., Rosch, R., Ryu, Dongsu, Spindloe, C., Vauzour, B., Villette, B., Schekochihin, A. A., Lamb, D. Q., Tzeferacos, P., Gregori, G., Casner, A.
- Issued Date
- 2021-10
- Citation
- PHYSICAL REVIEW LETTERS, v.127, no.17, pp.175002
- Abstract
- 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.
- Publisher
- AMER PHYSICAL SOC
- ISSN
- 0031-9007
- Keyword
- STAR-FORMATION, DYNAMO, MODEL, GENERATION, SATURATION
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