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Title: Generation of disc-like plasma from laser-matter interaction in the presence of a strong external magnetic field

Dynamics of laser produced plasma in a strong magnetic field was studied here using a 1 MA pulsed power generator coupled to an intense, high-energy laser. A 2–2.5 MG magnetic field was generated on the surface of a rod load 0.8–1.2 mm in diameter. A sub-nanosecond laser pulse with intensity of 3 × 10 15 W cm -2 was focused on the rod load surface. Side-on laser diagnostics showed the generation of two collimated jets 1–3 mm long on the front and rear sides of the load. End-on laser diagnostics reveal that the laser produced plasma in the MG magnetic field takes the form of a thin disc as the plasma propagates along the magnetic field lines. The disc-like plasma expands radially across the magnetic field with a velocity of 250 km s -1. An electron temperature of 400 eV was measured in the laser-produced plasma on the rod load.
 [1] ;  [2] ;  [3] ;  [1] ; ORCiD logo [4] ;  [4]
  1. Univ. of Nevada, Reno, NV (United States). Dept. of Physics
  2. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
  3. Department of Physics and Astronomy, University of Rochester
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Report Number(s):
Journal ID: ISSN 0741-3335
Grant/Contract Number:
AC52-06NA25396; NA0002075; SC0016500
Accepted Manuscript
Journal Name:
Plasma Physics and Controlled Fusion
Additional Journal Information:
Journal Volume: 59; Journal Issue: 8; Journal ID: ISSN 0741-3335
IOP Science
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; laser matter interaction; magnetic fields; plasma disc
OSTI Identifier: