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Inefficient magnetic-field amplification in supersonic laser-plasma turbulence

Abstract:
We report a laser-plasma experiment that was carried out at the LMJ-PETAL facility and realized the first magnetized, turbulent, supersonic plasma with a large magnetic Reynolds number ($\mathrm{Rm} \approx 45$) 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.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevLett.127.175002

Authors



Publisher:
American Physical Society
Journal:
Physical Review Letters More from this journal
Volume:
127
Article number:
175002
Publication date:
2021-10-21
Acceptance date:
2021-09-17
DOI:
EISSN:
1079-7114
ISSN:
0031-9007


Language:
English
Keywords:
Pubs id:
1129449
Local pid:
pubs:1129449
Deposit date:
2021-09-17

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