Investigation of Nitrogen Soft X-ray Emission from Dense Plasma Focus with Anode with Curved Tip Using the Lee Model
Tóm tắt
The Lee model has been employed to investigate the nitrogen soft x-ray emission from a Mather-type dense plasma focus device with an elliptical anode head. The simulations have been performed for various values for the minor radius of the elliptical anode head. These values have been presented as a factor of the anode radius, i.e.
$$0.1a-1.5a$$
.
$$a$$
is the anode radius. The simulation results have shown that if the minor radius increases, then the soft x-ray yield increases. This increase was due to increase in the pinch temperature, the pinch column volume and the pinch lifetime. An increase in the other radial phases’ durations has also been seen due to the increase in the minor radius. The chamber inductance in the radial phases has also been increased by increasing the minor radius. The optimum pressures for the soft x-ray emission were different for various minor radii.
Tài liệu tham khảo
F. Malik, H. Schmidt, S.M. Hassan, R.S. Rawat, T. Zhang, S. Mahmood, J.J. Lin, Effect of anode shapes on neutron emission from a repetitive plasma focus device. in 16th IEEE International Pulsed Power Conference 1703–1706 (2007)
H. Barati, M. Habibi, The effect of the shape of the anode head on the nitrogen soft X-ray emission from a dense plasma focus device: a numerical investigation using the modified Lee model code accompanied by experiments. J. Fusion Energy 38, 205–212 (2019)
M. Zakaullah, I. Ahmad, A. Omar, G. Murtaza, M.M. Beg, Effects of anode shape on plasma focus operation with argon. Plasma Sources Sci. Technol 5, 544 (1996)
M.A. Mohammadi, S. Sobhanian, C.S. Wong, S. Lee, P. Lee, R.S. Rawat, The effect of anode shape on neon soft x-ray emissions and current sheath configuration in plasma focus device. J. Phys. D Appl. Phys 42, 045203 (2009)
N. Talukdar, S. Borthakur, N.K. Neog, T.K. Borthakur, Comparative study of neutron emission from a plasma focus device using two different anode shapes. Phys. Plasmas 23, 052711 (2016)
H. Bhuyan, S.R. Mohanty, N.K. Neog, S. Bujarbarua, R.K. Rout, Comparative study of soft x-ray emission characteristics in a low energy dense plasma focus device. J. Appl. Phys. 95, 2975 (2004)
N. Talukdar, N.K. Neog, T.K. Borthkur, Effect of anode shape on pinch structure and x-ray emission of plasma focus device. Results Phys 3, 142–151 (2013)
H. Barati, M. Habibi, Argon soft x-ray scaling curves for the Amirkabir plasma focus device. J. Fusion Energy 41, 9 (2022)
H. Barati, M. Habibi, The effects of Ferrites on dense plasma focus device: using a modification to the Lee model. J. Fusion Energy 38, 219–227 (2019)
H. Barati, A theoretical verification to enhancing effect of Ferrites on magnetic field and line radiation of a dense plasma focus device. IEEE Trans. Plasma Sci 49(6), 1854–1859 (2021)
S. Lee, Plasma focus radiative model: review of the Lee model code. J. Fusion Energy 33(4), 319–335 (2014)
Y. Ay, Effect of the cathode radius on plasma dynamics and radiation emissions in a spherical plasma focus device. Phys. Plasmas 26, 102506 (2019)
H. Bhuyan, S.R. Mohanty, N.K. Neog, S. Bujarbarua, R.K. Rout, Comparative study of soft x-ray emission characteristics in a low energy dense plasma focus device. J. Appl. Phys 95(6), 15 (2004)
M. Akel, S. Lee, S.H. Saw, Numerical experiments in plasma focus operated in various gases. IEEE Trans. Plasma Sci. 40(12), 3290–7 (2012)
S. Lee, S.H. Saw, P. Lee, Rawat, numerical experiments on plasma focus neon soft x-ray scaling. Plasma Phys. Control Fusion 51, 105013 (2009)
S.H. Saw, S. Lee, Scaling laws for plasma focus machines from numerical experiments. Energy Power Eng 2(01), 65–72 (2010)