Effect of the Variation of Pressure on the Dynamics and Neutron Yield of Plasma Focus Machines

被引：5

作者：

Singh, Arwinder ^{[1
]}

Sing, Lee ^{[1
,2
,3
]}

Saw, Sor Heoh ^{[2
,4
]}

机构：

[1] INTI Int Univ, Nilai 71800, Malaysia

[2] Inst Plasma Focus Studies, Chadstone, Vic 3148, Australia

[3] Univ Malaya, Kuala Lumpur 50603, Malaysia

[4] Nilai Univ, Nilai 71800, Malaysia

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 2017年 / 45卷 / 08期

关键词：

Axial velocity; dense plasma focus; Lee model code; neutron yield; numerical experiment; radial trajectories; NUMERICAL EXPERIMENTS; FUSION; DEVICES; PHASE; LIMIT; MODEL;

D O I：

10.1109/TPS.2017.2715802

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Data from the 2002 Imperial College plasma focus (ICpf) are used to study the dynamics of axial and radial phase as functions of pressure. The speeds are found to deviate from the ideal constant current electromagnetic rule of v similar to P-0(-n) (where n = 0.5) with the modulus going below 0.5, due to the back-electromotive force varying the peak drive current even at fixed voltage operation. The amount of deviation depends on machine parameters and varies from a modulus of 0.3 for the NX1 axial phase to 0.47 in the INTI Plasma Focus (INTI PF) axial phase. The radial phase of the ICpf is characterized by a modulus of 0.48. The computed results are experimentally verified in the case of the NX1 and INTI PF axial phase. The effect on neutron yield is briefly discussed.

引用

页码：2286 / 2291

页数：6

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