Measuring spatial distributions of nuclear burn in ICF implosions at OMEGA and the NIF using proton emission imaging*

Fusion reactions in ICF implosions of D$^{3}$He-filled capsules produce 14.7-MeV D$^{3}$He protons and 3-MeV DD protons. Spatial distributions of the D$^{3}$He and DD reactions are studied with a penumbral imaging camera [1-2] that utilizes a CR-39-based imaging detector to detect the protons. Up to three orthogonal cameras have been used simultaneously at OMEGA to study the 3-D structure of asymmetric implosions, and two orthogonal cameras have now been used to study an exploding-pusher implosion at the NIF. Recent data from OMEGA and from the NIF will be shown. \\[4pt] [1] F. H. S\'{e}guin \textit{et al}., Rev. Sci. Instrum. \textbf{75}, 3520 (2004).\\[0pt] [2] F. H. S\'{e}guin \textit{et al}., Phys. Plasmas \textbf{13}, 082704 (2006).