Abstract
As the basic conditions for laser inertial confinement fusion (ICF) research, the targets are required to be well specified and elaborately fabricated. Because of the characteristics of the targets, the research and fabrication process is a systematically tough task, which needs fundamental and deep insights into film deposition, mechanical machining, precise measurement and assembly, etc. As a result, knowledge of material science, physics, mechanical as well as electronics is a necessity for target researchers. In this paper, we give introductions to the state of art on target fabrication for ICF research at Research Center of Laser Fusion (RCLF) in China.
Highlights
Controlled reaction of nuclear fusion is quite attractive in supply of abundant energy, which is desirable in terms of safety and economic cost
The principle of inertial confinement fusion (ICF) is that a target shell filled with deuterium and tritium (DT) fuel is radioactively ablated by energetic laser beams with total energy of more than 1 MJ, plasma with ultra-high temperature and pressure is generated recoil force from this plasma could push the remaining capsule shell toward the center and compress the fuel to an extreme critical density, hot spots with ultra-high temperature at parts of the fuel emerge and ignite all the fuel to nuclear fusion reaction, eventually nuclear energy is released to be utilized[2, 3]
Due to the extreme conditions needed for the ignition, properties like material purity, surface quality, doping level and size of the target components required for the ICF experiments are inevitably specified rigorously[5, 6]
Summary
Controlled reaction of nuclear fusion is quite attractive in supply of abundant energy, which is desirable in terms of safety and economic cost. Target capsules with diameter of ∼2 mm are required[4]. Due to the extreme conditions needed for the ignition, properties like material purity, surface quality, doping level and size of the target components required for the ICF experiments are inevitably specified rigorously[5, 6]. Research Center of Laser Fusion (RCLF) is the exclusive institute dedicating to target design and fabrication in China. We have built up versatile target fabrication facilities which enable us to be competent on producing target components with diverse patterns and compositions. These target components have persistently met rigid requirements from massive. The introduction will be mainly focused on topics as follows
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