A pulsed DD neutron generator based on the plasma focus (PF) device has been developed. The PF device was assembled using a single energy storage capacitor (10 F) and a triggerable spark gap switch in a compact geometry. The anode of the PF device was made of SS304 material with its tip modified using a high purity tungsten insert. Excluding the power supply, the size of the overall system was 0.6 0.6 1.0 m and the weight was less than 100 kg. A maximum DD neutron yield of (3.1 0.2) 10⁸ neutrons/pulse and average DD neutron yield of (2.24 0.16) 10⁸ neutrons/pulse (pulse duration = 35 4 ns) into 4π sr were observed at a capacitor bank energy of 3.1 kJ (25 kV) and at 4.5 mbar D₂ gas filling pressure. The experimentally observed average neutron yield was found to be around 30% more than the estimated yield obtained using scaling laws for neutrons (Y _n ≈ 1.7 10⁻¹⁰ I ₀ ^3.3; I ₀ is the peak discharge current in A). For a peak discharge current of 258 kA at 3.1 kJ, the neutron yield was estimated to be 1.23 10⁸ neutrons/pulse. The higher neutron production was attributed to the efficient design of the PF device as well as to the low erosion of the anode tip because of the tungsten insert. Using the time-of-flight method, maximum neutron energy was calculated to be 3.91 0.16 MeV in the radial direction at 4.5 mbar filling pressure. Numerical parametrization using the five-phase Lee model code was performed and found to be similar to PF devices developed across the world.

研制了一种基于等离子体聚焦（PF）装置的脉冲DD中子发生器。PF 装置使用单个储能电容器（10F) 和紧凑几何形状的可触发火花隙开关。PF 装置的阳极由 SS304 材料制成，其尖端使用高纯度钨插入物进行了修改。不包括电源，整个系统的尺寸为0.6 0.6 1.0 m，重量小于100 kg。在电容器组能量为(3.1 0.2) 10 ⁸中子/脉冲的最大 DD 中子产量和 (2.24 0.16) 10 ⁸中子/脉冲（脉冲持续时间 = 35 4 ns）到 4 π sr 的平均 DD 中子产量被观察到3.1 kJ (25 kV) 和 4.5 mbar D ₂气体填充压力。实验观察到的平均中子产额被发现比使用中子标度定律获得的估计产额高约 30% ( Y _n≈ 1.7 10 ⁻¹⁰ I ₀ ^3.3；I ₀是峰值放电电流，单位为 A)。对于 3.1 kJ 下 258 kA 的峰值放电电流，估计中子产额为 1.23 10 ⁸中子/脉冲。较高的中子产量归因于 PF 装置的高效设计以及由于钨插入物对阳极尖端的低侵蚀。使用飞行时间方法，在 4.5 毫巴填充压力下，径向方向的最大中子能量计算为 3.91 0.16 MeV。使用五相 Lee 模型代码进行数值参数化，发现与世界各地开发的 PF 设备相似。