Numerical Studies on Pinching Radius Effects to Current Densities of NX2 Plasma Focus


The pinching radius of ion beams effects are observed throughout the current densities obtained in the truncated end of NX2 plasma focus anode. The numerical experiments were carried out using RADPF code operating from 11 to 14kV of applied voltage using Neon as the filling gas with range of pressure 1.0–5.0 Torr. Energy beam acquired is studied with reference of the pinch radius and current densities. The theoretical calculations are studied. The radial speed will describe the energy transferred and will contribute to the drive parameter. The pinching radius of ion beam generated from the system plays an essential role in the determination of current densities that affects the energy beam produced. The highest energy beam, 156 J obtained at 4.0 Torr, where the current densities 7.3x109 Am-2 and pinch radius 1.68mm.

[1] S. H. Saw and S. L., The plasma focus—trending into the future, Int J Energy Res, 36, 1366–1374, (2012).

[2] L. Soto, New trends and future perspectives on plasma focus research, Plasma Phys. Control. Fusion, 47, A361–A381, (2005).

[3] S. Lee, Proceedings of IPFS Conference, 2012, (29 March to 1 April), Bangkok .

[4] V. A. Gribkov, et al., Applied Physics, 40, 3592–3607, (2007).

[5] M. Akel, S. A. Salo, S. H. Saw, and S. Lee, Properties of Ion Beams Generated by Nitrogen Plasma Focus, J Fusion Energy, 3, 189–197, (2014).

[6] M. B., p. 208, (2010), Journal of Physics: Conference Series.

[7] A. Henriquez, et al., (2014), Journal of Physics: Conference Series.

[8] S. L. Saw, Physics of Plasma (2013), 20(062702).

[9] S. L. Saw, Physics of Plasma (2012), 19(112703).

[10] V. N. Pimenov, 3rd Research Coordination Meeting on Dense Magnetized Plasmas, 9-13 April 2007, (2007).

[11] S. T. Ong, et al., N Plasma Phys Control Fusion, 56, p. 075001, (2014).