Fabricating Technology of Inertial Confinement Fusion DT Cryogenic Targets

The cryogenic deuterium-tritium targets are very important to laser inertial confinement fusion, and mainly adopt plastics capsule, Be shell, foam shell, etc. According to the performance of the shell material, several different techniques are taken to fabricate cryogenic deuterium-tritium targets. For plastics capsule, “high pressure fill deuterium-tritium, then freeze to low temperature” or “fill-tube fill deuterium-tritium” method is applied. For Be shell, “condensation deuterium-tritium at low-pressure, low temperature” or “diffuse-bonding two Be hemisphere shells at high temperature, high pressure” means is adopted. For foam shell, the way of “absorbtion of deuterium-tritium liquid” is used. The development and the tendency of above technique and methods are summarized.