One-dimensional radiation-hydrodynamic scaling studies of imploding spherical plasma liners

摘要: One-dimensional radiation-hydrodynamic simulations are performed to develop insight into the scaling of stagnation pressure with initial conditions an imploding spherical plasma shell or “liner.” Simulations reveal evolution high-Mach-number (M), annular, flows during convergence, stagnation, shock formation, and disassembly, indicate that cm- μs-scale plasmas peak pressures near 1 Mbar can be generated by liners kinetic energy several hundred kilo-joules. It is shown radiation transport thermal conduction must included avoid non-physical temperatures at origin which artificially limit liner convergence and, thus, pressure. Scalings stagnated lifetime (τstag) average (Pstag, origin, averaged over τstag) determined evaluating a wide range conditions. For high-M flows, τstag ∼ ΔR/v0, where ΔR v0 thick...