Abstract
Numerical experiments were carried out using 5-phase Lee model on different plasma focus devices with different filling gases. The relation of radiation power gain/loss terms as a function of temperature has been demonstrated. Variation of radial trajectories versus pressure with 0.1 Torr step has been investigated. Radiative collapse phenomena in plasma focus devices have been observed for heavy noble gases (Ar, Kr, Xe). Obtained results showed that the line radiation emission and tube voltage have huge values near the radiative collapse regime.
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A. Bernard, H. Bruzzone, P. Choi, H. Chuaqui, V. Gribkov, J. Herrera, K. Hirano, A. Krejci, S. Lee, C. Luo, F. Mezzetti, M. Sadowski, H. Schmidt, K. Ware, C.S. Wong, V. Zoita, Scientific status of plasma focus research. Mosc. J. Phys. Soc. 8, 93–170 (1998)
R.R. Prasad, M. Krishnan et al., Neon dense plasma focus point X-ray source for <0.25 μm lithography. SPIE 2194, 120–128 (1994)
S. Lee, P. Lee, G. Zhang, X. Feng, V.A. Gribkov, M. Liu, A. Serban, T. Wong, High rep rate high performance plasma focus as a powerful radiation source. IEEE Trans. Plasma Sci. 26(4), 1119–1126 (1998)
K. Bergmann, O. Rosier, W. Neff, R. Lebert, Pinch-plasma radiation source for extreme-ultraviolet lithography with a kilohertz repetition frequency. Appl. Opt. 39(22), 3833–3837 (2000)
R. Lebert, W. Neff, D. Rothweiler, Pinch plasma source for X-ray microscopy with nanosecond exposure time. J. X-Ray Sci. Technol. 6, 2 (1996)
V.A. Gribkov, A. Srivastava, P.L.C. Keat, V. Kudryashov, S. Lee, Operation of NX2 dense plasma focus device with argon filling as a possible radiation source for micro-machining. Plasma Sci. IEEE Trans. 30, 1331–1338 (2002)
S. Lee, Radiative dense plasma focus computation package: RADPF (2012), http://www.plasmafocus.net. http://www.plasmafocus.net/IPFS/modelpackage/File1RADPF.htm
S. Lee, Plasma focus model yielding trajectory and structure, in Radiations in Plasmas, vol. II, ed. by B. McNamara (World Scientific, Singapore, 1984), pp. 978–987
T.Y. Tou, S. Lee, K.H. Kwek, Non perturbing plasma focus measurements in the run down phase. IEEE Trans. Plasma Sci. 17(2), 311–315 (1989)
S. Lee, A sequential plasma focus. IEEE Trans. Plasma Sci. 19(5) (1991)
J. Ali, Development and studies of a small plasma focus. Ph.D. dissertation (Universiti Teknologi Malaysia, Malaysia, 1990)
S. Lee, A. Serban, Dimensions and lifetime of the plasma focus pinch. IEEE Trans. Plasma Sci. 24(3), 1101–1105 (1996)
K.N. Koshelev, V.I. Krauz, N.G. Reshetniak, R.G. Salukvadze, Yu.V. Sidelnikov, E.Yu. Khautiev, The formation of the micropinch structure in plasma focus by the addition of heavy impurities. J. Phys. D Appl. Phys. 21, 1827 (1988)
S. Lee, S. H. Saw, J. Ali, Numerical experiments on radiative cooling and collapse in plasma focus operated in krypton. J. Fusion Energ. (2012) doi:10.1007/s10894-012-9522-8
S. Lee, S. H. Saw, Multi-radiation modelling of the plasma focus, in Fifth International Conference on Fronties of Plasma Physics and Technology, 18–22 April 2011, Singapore
Z. Ali, S. Lee, F.D. Ismail, Saktioto, J. Ali, P.P. Yupapin, Radiation self absorption effect in Ar gas NX2 mather type plasma focus. Phys. Proced. 8, 393–400 (2011)
Sh. Al-Hawat, Axial velocity measurement of current sheath in a plasma focus device using a magnetic probe. IEEE Trans. Plasma Sci. 32(2), 764–769 (2004)
Sh. Al-Hawat, M. Akel, C.S. Wong, X-ray emission from argon plasma focus contaminated with copper impurities in AECS PF-2 using five channel diode spectrometer. J. Fusion Energ. 30(6), 503–508 (2011)
S.H. Saw, P.C.K. Lee, R.S. Rawat, S. Lee, Optimizing UNU/ICTP PFF plasma focus for neon soft X-ray operation. IEEE Trans. Plasma Sci. 37(7), 1276–1282 (July 2009)
S. Lee, S.H. Saw, P.C.K. Lee, R.S. Rawat, Numerical experiments on plasma focus neon soft X-ray scaling. Plasma Phys. Control. Fusion 51, 105013 (2009)
S. Lee, S.H. Saw, P.C.K. Lee, R.S. Rawat, H. Schmidt, Computing plasma focus pinch current from total current measurement. Appl. Phys. Lett. 92(11), 111, 501, (March 2008)
Sh. Al-Hawat, M. Akel, S. Lee, S.H. Saw, Model parameters vs. gas pressure in two different plasma focus devices operated in Argon and Neon. J. Fusion Energ. 31(1), 3–20 (2012)
M Akel, Yield optimization of Helium and Lyman emissions in low energy plasma focus operated with argon. J Fusion Energ. (2011). doi:10.1007/s10894-011-9499-8
M. Akel, S. Lee, Practical optimization of AECS PF-2 plasma focus device for argon soft X-ray operation. J. Fusion Energ. 31(2), 122–129 (2012)
S. Al-Hawat, M. Akel, S. Lee, Numerical experiments on neon soft X-ray optimization of AECS—PF2 plasma focus device. J Fusion Energ. 30(6), 494–502 (2011)
M. Akel, Sh. Al-Hawat, S. Lee, Numerical experiments on soft X-ray emission optimization of nitrogen plasma in 3 kJ plasma focus SY-1 using modified Lee model. J. Fusion Energ. 28(4), 355–363 (2009)
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The authors would like to thank Director General of AECS, for encouragement and permanent support.
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Akel, M., Lee, S. Radiative Collapse in Plasma Focus Operated with Heavy Noble Gases. J Fusion Energ 32, 111–116 (2013). https://doi.org/10.1007/s10894-012-9535-3
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DOI: https://doi.org/10.1007/s10894-012-9535-3