The plastic DD filled capsule implosion experiment is performed on Shenguang III prototype laser facility. One-dimensional hydrodynamic numerical simulations show that the implosion compression ratio can be controlled by chang-ing the capsule ablator thickness. In experiments, two types of capsules are studied and most of important implosion parameters are collected, such as neutron yield, X-ray bang-time, trajectory, and shape of hot core. The comparison between post-simulations and experimental results is performed. In our experiments, the neutron yield is 6.8 × 107 and Y OC1D reaches 34% for low compression ratio implosion; the neutron yield is 6.3 × 106 and Y OC1D is only 2.3% for middle compression ratio implosion. Meantime, the shape of hot core obtains an extra higher Legendre partial (P2 is 18%and P4 is 5%). On another side, the trajectory and bang-time are compared with simulations well.
惯性约束聚变 收缩比 内爆对称性