Inference of Isotropic and Anisotropic Flow in Laser Direct-Drive Cryogenic DT Implosions on OMEGA

Cryogenic DT cryogenic targets are imploded on the OMEGA Laser System using laser direct drive inertial confinement fusion (ICF).  Efficient conversion of the shell kinetic energy to the internal hot-spot energy is an essential requirement in ICF fusion implosions.  The spectral moments of the neutron distribution from a fusing deuterium-tritium (DT) plasma are used to interpret the spectral moments of the separate DT and DD fusion reactants^1,2.  Broadening of the second moment not attributed to the thermal temperature of the fusing plasma is a signature of isotropic and anisotropic flow within the hot-spot fuel assembly.  The inferred isotropic flow is used to calculate the residual kinetic energy fraction (f_RKE) and the influence of isotropic flows on the yield degradation will be investigated.  This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0003856.