Numerical Experiments Performed on the Imperial College Plasma Focus Machine: Dependence on Deuterium Pressure

Publication Issue: 
Volume 37, Issue 1, 2016
Page No: 
Date Received: 
Thursday, April 21, 2016
Authors' Name: 
Arwinder Singh
Saw Sor Heoh
Lee Sing
Authors' Affiliation and Address: 
INTI International University, Persiaran Perdana BBN, Putra Nilai, 71800 Nilai, Negeri Sembilan, Malaysia
Nilai University, No 1, Persiaran University, Putra Nilai, 71800 Nilai, Negeri Sembilan, Malaysia
Institute for Plasma Focus Studies, 32 Oakpark Drive, Chadstone, VIC3148, Australia.
University of Malaya, Kuala Lumpur, Malaysia
In this paper, we use Lee’s 5 phase model code to configure the Imperial College Plasma focus machine operating in the pressure ( Po ) range from 0.5 Torr to 6 Torr to obtain the relationship between axial speed va, radial shock speed vs, piston speed vp and pinch temperature ( Po ) with as follows: va ≈ 14Po -0.42 , vs ≈ 60Po -0.6, vp ≈ 40Po -0.57, Tpinch(max) ≈ 20Po -1.26. Using model parameters fitted from measured current waveforms we also computed the neutron yield versus pressure curve and found that the computed results curve has features of agreement with the measured curve of the Imperial College machine.