A hollow ring of 20 OMEGA beams on flat CH targets creates stable cylindrical plasma jets with self-generated megagauss fields extending >4 mm whose dimensionless parameters match YSO jets.
Numerical Simulation of magnetized jet creation using a hollow ring of laser beams
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abstract
Three dimensional FLASH magneto-hydrodynamics(MHD) modeling is carried out to interpret the OMEGA laser experiments of strongly magnetized, highly collimated jets driven by a ring of 20 OMEGA beams. The predicted optical Thomson scattering spectra and proton images are in good agreement with a subset of the experimental data. Magnetic fields generated via the Biermann battery term are amplified at the boundary between the core and the surrounding of the jet. The simulation predicts multiple axially aligned magnetic flux ropes with alternating poloidal component. Future applications of the hollow ring configuration in laboratory astrophysics are discussed.
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Mega-Gauss Plasma Jet Creation Using a Ring of Laser Beams
A hollow ring of 20 OMEGA beams on flat CH targets creates stable cylindrical plasma jets with self-generated megagauss fields extending >4 mm whose dimensionless parameters match YSO jets.