Behaviour of astrophysical and high energy density plasmas are primarily governed by magnetic transport and radiation properties. We present a study of magnetic field transport and radiation characteristics during super-Alfvénic compressions of a laboratory magnetized plasma. A sequential theta pinch is used to produce a radially compressed magnetized plasma column, with the magnetic field within this plasma being antiparallel to the external driving magnetic field at the start of compression. Time-resolved profiles of electron density, temperature, and magnetic field at the central axis of plasma column are measured, while simultaneous time series images of bulk plasma motion and a time profile of self-luminous intensity are obtained. Comprehensive measurements of the plasma parameters, combined with an analysis grounded in the Extended-magnetohydrodynamic (ExMHD) theory, reveal a strong coupling between the magnetic transport and plasma dynamics, with the hydrodynamic advection being the dominant means of magnetic field transport in this plasma. Notably, the effect of resistive diffusion at the plasma edge can be effectively transported to its core via hydrodynamic advection. Additionally, we quantitatively evaluate the radiation loss during the plasma compressions, demonstrating that recombination radiation, particularly the three-body recombination, dominates plasma radiation colling and that an increase in magnetic field aids in reducing radiation loss.

magnetized plasma,magnetic transport,radiation properties,super-Alfvénic compressions