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首页> 外文期刊>Journal of Fusion Energy >Study of the Variation of the β Factor and the Radius Through the Hollow Cathode Z-Pinch by Using Snowplow Model Simulation
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Study of the Variation of the β Factor and the Radius Through the Hollow Cathode Z-Pinch by Using Snowplow Model Simulation

机译：通过使用雪罗模型模拟研究β因子和半径通过空心阴极Z-PINCH的变化

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Abstract The Hollow cathode z-pinch is designed and operated to investigate the ejected plasma through the hollow cathode. The hollow cathode is simulated using the snow plow model. The model uses three phases: the radial inward phase, the reflected shock phase and expansion phase. The differential equation of plasma motion and its electric circuit equation are derived and solved numerically using the code. The snow plow model suggested that the plasma radius decreases to zero, so this problem was solved adding the effect of the internal kinetic pressure and the shock wave into the general equation of motion using β factor. The effect of β factor (ratio of the kinetic pressure of plasma to magnetic pressure) is studied on plasma temperature, plasma radii, plasma velocity, pinching time and plasma elongation distance. The simulated results illustrate that the β factor varies from 0 to 0.79. The data illustrate that the elongation velocity of plasma is increased by decreasing the β factor, while the elongation displacement of the plasma is increased by increasing of the ring radii of the hollow cathode. The code illustrates that a multi-pinch of the CS could be appeared at high energy.
机译：摘要设计和操作空心阴极Z-PINCH，以通过空心阴极研究喷射等离子体。使用雪犁模型模拟空心阴极。该模型使用三个阶段：径向向内阶段，反射冲击阶段和膨胀阶段。使用该代码在数值上衍生等离子体运动的微分方程及其电路方程。雪犁模型表明等离子体半径降低至零，因此解决了内部动力量和冲击波的效果，使用β因子将内部动力量和冲击波的效果添加到通用运动方程中。研究了β因子（血浆动力学与磁力的动力学比率的影响）是对等离子体温度，等离子体半径，等离子体速度，夹紧时间和等离子体伸长距离进行了研究。模拟结果说明β因子从0变化到0.79。数据说明通过降低β因子来增加等离子体的伸长速度，而通过增加空心阴极的环半径来增加等离子体的伸长位移。该代码示出了可以在高能量下出现CS的多夹卡。

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