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Numerical Experiments on Soft X-ray Emission Optimization of Nitrogen Plasma in 3 kJ Plasma Focus SY-1 Using Modified Lee Model

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Abstract

The X-ray emission properties of nitrogen plasmas are numerically investigated using corona plasma equilibrium model. The X-ray emission intensities of nitrogen Ly α , Ly β and He α , He β lines are calculated. The optimum plasma temperature for nitrogen X-ray output is concluded to be around 160 eV. The Lee model is modified to include nitrogen in addition to other gasses (H2, D2, He, Ne, Ar, Xe). It is then applied to characterize the 2.8 kJ plasma focus PF-SY1, finding a nitrogen soft X-ray yield (Ysxr) of 8.7 mJ in its typical operation. Keeping the bank parameters and operational voltage unchanged but systematically changing other parameters, numerical experiments were performed finding the optimum combination of pressure = 0.09 Torr, anode length = 7.2 cm and anode radius = 2.58 cm. The optimum Ysxr was 64 mJ. Thus we expect to increase the nitrogen Ysxr of PF-SY1 sevenfold from its present typical operation; without changing the capacitor bank, merely by changing the electrode configuration and operating pressure.

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References

  1. S. Lee, in Radiations in plasmas, ed. by B. McNamara (World Scientific, Singapore, 1984), pp. 978–987

    Google Scholar 

  2. S. Lee et al., Amer. J. Phys. 56, 62 (1988)

    Article  ADS  Google Scholar 

  3. T.Y. Tou, S. Lee, K.H. Kwek, IEEE Trans. Plasma Sci. 17, 311 (1989)

    Article  ADS  Google Scholar 

  4. S. Lee, IEEE Trans. Plasma Sci. 19, 912 (1991)

    Article  ADS  Google Scholar 

  5. A. Serban, S. Lee, J. Plasma Phys. 60, 3–15 (1998)

    Article  ADS  Google Scholar 

  6. S. Lee, A. Serban, IEEE Trans. Plasma Sci. 24, 1101–1105 (1996)

    Article  ADS  Google Scholar 

  7. J.B. Ali, Development and studies of a small plasma focus, PhD thesis, University Technology Malaysia, Kuala Lumpur, Malaysia, 1990

  8. D.E. Potter, Phys. Fluids 14, 19 (1971)

    Article  Google Scholar 

  9. M.H. Liu et al., IEEE Trans. Plasma Sci. 26, 135–140 (1998)

    Article  ADS  Google Scholar 

  10. S. Lee et al., IEEE Trans. Plasma Sci. 26, 1119 (1998)

    Article  ADS  Google Scholar 

  11. S. Bing, Plasma dynamics and X-ray emission of the plasma focus, PhD Thesis. (NIE ICTP Open Access Archive, 2000), http://eprints.ictp.it/99/

  12. S. Lee, (2000–2007), http://ckplee.myplace.nie.edu.sg/plasmaphysics/

  13. S. Lee, (ICTP Open Access Archive 2005), http://eprints.ictp.it/85/13

  14. S. Lee, Twelve years of UNU/ICTP PFF—A Review IC, 98, (231) ICTP, Miramare, Trieste; ICTP OAA: (1998), http://eprints.ictp.it/31/

  15. S.V. Springham et al., Plasma Phys. Control. Fusion 42, 1023–1032 (2000)

    Article  ADS  Google Scholar 

  16. A. Patran et al., Plasma Sources Sci. Technol. 14(3), 549–560 (2005)

    Article  ADS  Google Scholar 

  17. V. Siahpoush et al., Plasma Phys. Control. Fusion 47, 1065 (2005)

    Article  ADS  Google Scholar 

  18. L. Soto et al., Braz. J. Phys. 34, 1814 (2004)

    Article  Google Scholar 

  19. D. Wong et al., Plasma Sources Sci. Technol. 16, 116 (2007)

    Article  ADS  Google Scholar 

  20. S. Lee et al., Appl. Phys. Lett. 92, 111501 (2008)

    Article  ADS  Google Scholar 

  21. S. Lee et al., Appl. Phys. Lett. 92, 021503 (2008)

    Article  ADS  Google Scholar 

  22. S. Lee et al., Plasma Phys. Control. Fusion 50, 065012 (2008)

    Article  ADS  Google Scholar 

  23. S. Lee, Radiative dense plasma focus computation package: RADPF, http://www.intimal.edu.my/school/fas/UFLF/ http://www.plasmafocus.net/IPFS/modelpackage/File1RADPF.htm

  24. M. Shafiq et al., Modern Phys. Lett. B 16(9), 309 (2002)

    Article  ADS  Google Scholar 

  25. M. Shafiq, et al., Journal of Fusion Energy, 20, 3, 113, September 2001 (@ 2002)

  26. N.K. Neog et al., J. Appl. Phys. 99, 013302 (2006)

    Article  ADS  Google Scholar 

  27. M. Sadiq et al., Nucl. Instrum. Methods Phys Res B 252, 219 (2006)

    Article  ADS  Google Scholar 

  28. R.S. Rawat et al., Surf. Coat. Technol. 173, 276 (2003)

    Article  Google Scholar 

  29. M. Hassan et al., Vacuum 81, 291 (2006)

    Article  Google Scholar 

  30. M. Hassan et al., J. Phys. D Appl. Phys. 40, 769 (2007)

    Article  ADS  Google Scholar 

  31. S.R. Mohanty et al., Jpn J Appl Phys 46(5A), 3039 (2007)

    Article  ADS  Google Scholar 

  32. NIST Atomic spectra database levels data http://physics.nist.gov/

  33. S. Lee, Aust. J. Phys. 36, 891 (1983)

    ADS  Google Scholar 

  34. M.H. Liu, Soft X-Ray from compact plasma focus. PhD Thesis, School of Science, Nanyang Technological University, December 1996

  35. F. Richer, et al., Dense z-pinches. Second International Conference (1989), New York/N.Y.: AIP, (AIP Conference Proceedings 195) 1989

  36. S. Lee, Plasma Phys. Control. Fusion 50, 105005 (2008)

    Article  ADS  Google Scholar 

  37. S. Lee et al., J. Fusion Energ. 27(4), 292 (2008)

    Article  Google Scholar 

  38. S. Al-Hawat, IEEE Trans. Plasma Sci. 32, 2 (2004)

    Article  Google Scholar 

Download references

Acknowledgments

The authors would like to thank Director General of AECS, for encouragement and permanent support.

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Authors and Affiliations

  1. Department of Physics, Atomic Energy Commission, P.O. Box 6091, Damascus, Syria

    M. Akel & Sh. Al-Hawat

  2. Institute for Plasma Focus Studies, 32 Oakpark Drive, Chadstone, VIC, 3148, Australia

    S. Lee

  3. National Institute of Education, Nanyang Technological University, Singapore, 637616, Singapore

    S. Lee

  4. INTI International University College, 71800, Nilai, Malaysia

    S. Lee

Authors
  1. M. Akel
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  2. Sh. Al-Hawat
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  3. S. Lee
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Correspondence to M. Akel.

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Akel, M., Al-Hawat, S. & Lee, S. 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, 355 (2009). https://doi.org/10.1007/s10894-009-9203-4

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  • DOI: https://doi.org/10.1007/s10894-009-9203-4

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