基于等离子体的动量和能量守恒方程,利用一维雪耙模型,描绘出等离子体焦点装置放电电流壳层的动力学行为,得到整个电流壳层在两极间的运动情况,计算了电流壳层的加速段时间,计算结果与实验符合得很好.实验测量了等离子体鞘的反箍缩速度、加速阶段速度、聚焦阶段箍缩速度和崩溃阶段速度及中子发射异向性因子,均证明焦点装置中子产生机制主要由束靶机制控制.%Based on the solutions of the equations of motion and energy of plasma, the dynamic behavior of discharge currents sheath on the DPF assembly is described by the model of one - dimensional snow plot. The solution of the equation of motion on the whole discharge currents between the inter/out electrodes is obtained. The value of duration of the discharge current acceleration is calculated and is compared with the results of experiments well. The value of velocity of anti - pinch phase, the accelerating phase, the pinch-focus phase and the breakdown phase is experimental measured. At the time, the value of anisotropic factor of the distribution on neutron output is measured. So, it is assumed that the main mechanism of neutron production on the DPF assembly is beam - target mechanism.
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