Variations and characteristics of dynamic Hohlraums on Z

Summary form only given. Dynamic Hohlraums are being developed on Z as intense sources of X-rays for high-energy density physics (HEDP) and inertial confinement fusion (ICF) applications. Current drivers in use for these applications consist of nested arrays of tungsten wires. The arrays form a plasma shell, which implodes on a low-opacity cylindrical target centered at the z-axis. The high-atomic-number shell traps a fraction of the X-rays produced in the target from the conversion of shell kinetic energy into thermal energy at the array-target interface. Radiation that flows from the interior of the hot target through a radiation exit hole (REH) in the anode, axially centered above the target, is used for HEDP experiments. The paper discusses the characteristics of radiation exiting the REH for a baseline configuration (and variations about that baseline), which is currently in use for HEDP applications. The configuration generates /spl sim/10 TW of X-rays from a 2.4-mm diameter REH. Measurements include time dependent total X-ray power, energy spectrum, and spatial profiles of the radiation (exiting the REH, and generated external to the target as viewed by a near normal line of sight). Measurements are interpreted using 2D radiation- magnetohydrodynamic simulations and an analytic model.