Radiative transport in a laser plasma

Simulations of inertial confinement fusion driven by a novel synchrotron-radiation-based x-ray igniter

“…Numerical simulations using the Same as in other fast igniter schemes. It must be shorter than hydro expansion time Heating source energy requirements 500-1000 J @ (400 g/ cm 3 ) 200-400 J @ (800 g/ cm 3 ) An order of magnitude less than in Other Fast Ignition schemes code RADEX [9] allowed us to evaluate the spectral flux, energy, pulse duration of the x-ray source and other characteristics needed to initiate ignition in compressed DT targets. Fig.1 shows the electron temperature and neutron yield evolution for a DT capsule compressed to 600 g/cm 3 and heated by a 5ps, 1500 J x-ray pulse with wavelength around 2 Å.…”

6.7-nm Emission from Gd and Tb Plasmas over a Broad Range of Irradiation Parameters Using a Single Laser

“…The plasma physics behind the measured trends is discussed below with the support of transient hydrodynamic / atomics physics simulations. The simulations were conducted using an upgraded version of the hydrodynamic / atomic physics code RADEX [16,17,18,19,20,21] originally developed to simulate plasmas for soft x-ray laser amplification, employing a Lagrangian grid and atomic collisional and radiative rates from the HULLAC code [22]. RADEX calculates self-consistent radiation transport for several hundred thousand lines originating from more than 5000 levels of all possible ion stages.…”