Abstract
The analysis and control of implosion symmetry of fuel capsule is one of the most important issues in inertial confinement fusion (ICF), and many experiments and simulations on it have been done. Here we use a simple model on implosion symmetry in ICF to analyze the best lengths of the hohlraum and distortions of capsule on Shenguang-Ⅱ and Shenguang-Ⅲ prototype laser facility. It is shown that the calculated best lengths agree with the ones obtained in experiment and the calculated capsule distortions are also close to experimental measurements. The validated model may give some references to the future experiments of implosion symmetry on Shenguang-Ⅲ laser facility.
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