Skip to main content
SpringerLink
Log in

Pinch Current and Soft X-Ray Yield Limitations by Numerical Experiments on Nitrogen Plasma Focus

  • Original Paper
  • Published:
Journal of Fusion Energy Aims and scope Submit manuscript

Abstract

The modified version of the Lee model code RADPF5-15a is used to run numerical experiments with nitrogen gas, for optimizing the nitrogen soft X-ray yield on PF-SY1. The static inductance L 0 of the capacitor bank is progressively reduced to assess the effect on pinch current I pinch. The experiments confirm the I pinch, limitation effect in plasma focus, where there is an optimum L 0 below which although the peak total current, I peak, continues to increase progressively with progressively reduced inductance L 0, the I pinch and consequently the soft X-ray yield, Ysxr, of that plasma focus would not increase, but instead decreases. For the PF-SY1 with capacitance of 25 μF, the optimum L 0 = 5 nH, at which I pinch = 254 kA, Ysxr = 5 J; reducing L 0 further increases neither I pinch nor nitrogen Ysxr. The obtained results indicate that reducing the present L 0 of the PF-SY1 device will increase the nitrogen soft X-ray yield.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

References

  1. M. Shafiq et al., Mod. Phys. Lett. B. 16(9), 309–318 (2002)

    Article  ADS  Google Scholar 

  2. M. Shafiq et al., J. Fusion Energ. 20(3), 113–115 (2001). (q 2002)

    Article  Google Scholar 

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

    Article  ADS  Google Scholar 

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

    Article  ADS  Google Scholar 

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

    Article  ADS  Google Scholar 

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

    Article  ADS  Google Scholar 

  7. S. Lee, Radiative Dense Plasma Focus Computation Package: RADPF (2009), http://www.intimal.edu.my/school/fas/UFLF/. http://www.plasmafocus.net/IPFS/modelpackage/File1RADPF.htm

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

    Article  ADS  Google Scholar 

  9. S. Lee et al., J. Fusion Energ. 27(4), 292–295 (2008)

    Article  Google Scholar 

  10. V.A. Gribkov et al., J. Phys. D Appl. Phys. 40, 3592–3607 (2007)

    Article  ADS  Google Scholar 

  11. V.Ya. Nukulin, S.N. Polukhin, Plasma Phys. Rep. 33, 271–277 (2007)

    Article  ADS  Google Scholar 

  12. M. Akel, S. Al-Hawat, S. Lee, J. Fusion Energ. (2009). doi: 10.1007/s10894-009-9203-4, published online 19 May

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

    Google Scholar 

  14. S. Lee et al., Am. J. Phys. 56, 62–68 (1988)

    Article  ADS  Google Scholar 

  15. T.Y. Tou, S. Lee, K.H. Kwek, IEEE Trans. Plasma Sci. 17, 311–315 (1989)

    Article  ADS  Google Scholar 

  16. S. Lee, IEEE Trans. Plasma Sci. 19, 912–919 (1991)

    Article  ADS  Google Scholar 

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

    Article  ADS  Google Scholar 

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

    Article  ADS  Google Scholar 

  19. J.B. Ali, Development and Studies of a small Plasma Focus. PhD thesis, University Technology Malaysia, Kuala Lumpur, Malaysia, 1990

  20. D.E. Potter, Nucl. Fusion. 18(6), 813–823 (1978)

    ADS  Google Scholar 

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

    Article  ADS  Google Scholar 

  22. S. Lee et al., IEEE Trans. Plasma Sci. 26, 1119–1126 (1998)

    Article  ADS  Google Scholar 

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

  24. S. Lee (2000–2009), http://ckplee.myplace.nie.edu.sg/plasmaphysics/

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

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

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

    Article  ADS  Google Scholar 

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

    Article  ADS  Google Scholar 

  29. V. Siahpoush et al., Plasma Phys. Control Fusion 47, 1065–1075 (2005)

    Article  ADS  Google Scholar 

  30. L. Soto et al., Braz. J. Phys. 34, 1814–1821 (2004)

    Article  Google Scholar 

  31. D. Wong et al., Plasma Sources Sci. Technol. 16, 116–123 (2007)

    Article  ADS  Google Scholar 

  32. S. Al-Hawat, IEEE Trans. Plasma Sci. 32(2), 764–769 (2004)

    Article  ADS  Google Scholar 

Download references

Acknowledgments

The authors would like to thank Director General of AECS, for encouragement and permanent support. One of authors (Dr. Mohamad Akel) would also like to express thanks to Mrs. Sheren Isamael, who collaborated with me going through with all the numerical experiments using Lee Model.

Author information

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

    S. Lee

  4. INTI University College, 71800, Nilai, Malaysia

    S. Lee

Authors
  1. M. Akel
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Sh. Al-Hawat
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. S. Lee
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to M. Akel.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Akel, M., Al-Hawat, S. & Lee, S. Pinch Current and Soft X-Ray Yield Limitations by Numerical Experiments on Nitrogen Plasma Focus. J Fusion Energ 29, 94–99 (2010). https://doi.org/10.1007/s10894-009-9238-6

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10894-009-9238-6

Keywords

Search

Navigation