LOW-DENSITY DOPED FOAMS FOR ICF LONG-SCALE-LENGTH PLASMA-EXPERIMENTS

Inertial Confinement Fusion (ICF) targets occasionally require the pre sence of diagnostic dopants to facilitate temperature measurements. To this end poly(4-methyl-1-pentene) (PMP or TPX) foams were produced wi th very low densities (3 to 5 mg/cc) and low levels of diagnostic dopa nts. The dopants added to the foams were titanium (Ti), chromium (Cr), and manganese (MN). The transition metal doped foams were produced wi th metal loadings as high as 1 wt%, and densities between 3 and 5 mg/c c. The average foam densities were determined using beta-transmission, and the dopant amounts were determined using x-ray fluorescence. Proc edures for doped foam production and measurements of the resulting foa m characteristics will be presented.