Experiments and simulations on the possibility of radiative contraction/collapse in the PF-1000 plasma focus

• Autorzy: Akel M. , Cikhardt J. , Kubes P. , Kunze H.-J. , Lee S. , Paduch M. , Saw S. H.

Identyfikatory

DOI

10.1515/nuka-2016-0025

• Konferencja: PLASMA-2015 International Conference on Research and Applications of Plasmas (7-11 September 2015 ; Warsaw, Poland)
• Języki publikacji: EN

Abstrakty

EN

Experimental studies of discharges in the plasma focus facility with neon filling and respective numerical simulations employing the radiative Lee code are reported. The pinch currents exceed the Pease-Braginskii current, which indicates that radiative losses are larger than heating and that contraction of the formed plasma should occur. Both of these effects were indeed observed. Parallel numerical simulations were crucial for the identifi cation of such an effect.

Słowa kluczowe

EN

plasma focus; radiative collapse; radiation losses; simulations

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2016
• Tom: Vol. 61, No. 2
• Strony: 145--148
• Opis fizyczny: Bibliogr. 14 poz., rys.

Twórcy

autor

Akel M.

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

autor

Cikhardt J.

• Czech Technical University in Prague, Technická 2, 166 27 Prague, Czech Republic

autor

Kubes P.

• Czech Technical University in Prague, Technická 2, 166 27 Prague, Czech Republic

autor

Kunze H.-J.

• Institute for Experimental Physics V, Ruhr-University, Bochum, Germany, Tel.: [phone]

autor

Lee S.

• INTI International University, Nilai, Malaysia

autor

Paduch M.

• Institute of Plasma Physics and Laser Microfusion, 23 Hery Str., 01-497 Warsaw, Poland

autor

Saw S. H.

• Nikai University, 71800 Nilai, Malaysia

Bibliografia

• 1. Pease, R. S. (1957). Equilibrium characteristics of a pinched gas discharge cooled by bremsstrahlung radiation. Proc. R. Soc. London Ser. B, 70, 11–13.
• 2. Braginskii, S. I. (1957). Contribution to the theory of spark channels. Sov. Phys. JETP, 6, 494–501.
• 3. Bernal, I., & Bruzonne, H. (2002). Radiative collapses in Z-pinches with axial mass losses. Plasma Phys. Control. Fusion, 44, 223–231.
• 4. Robson, A. E. (1989). Radiative collapse of a Z pinch in hydrogen and helium. Phys. Fluids B, 1(1), 1834–1842.
• 5. Rudakov, L. I., & Sudan, R. N. (1997). MHD turbulence in radiating Z-pinches. Phys. Rep., 283, 53–63.
• 6. Bogomaz, A. A., Budin, A. V., Losev, S. Yu., Pinchuk, M. E., Pozubenkov, A. A., Rutberg, Ph. G., & Savvatev, A. F. (2008). Attainment of the Pease-Braginskii current in an ultra-high-pressure discharge. Plasma Phys. Rep., 34, 366–375.
• 7. Koshelev, K. N., Krauz, V. I., Reshetniak, N. G., Salukvadze, R. G., Sidelnikov, Yu. V., & Khautiev, E. Yu. (1988). The formation of the micropinch structure in plasma focus by the addition of heavy impurities. J. Phys. D-Appl. Phys., 21, 1827–1829.
• 8. Lee, S. (2014). Plasma Focus radiative model: Review of the Lee model code. J. Fusion Energy, 33, 319–335.
• 9. Lee, S., Saw, S. H., Akel, M., Kunze, H. -J., Kubes, P., & Paduch, M. (2016). Conditions for radiative cooling and collapse in the Plasma Focus illustrated with numerical experiments on the PF-1000. IEEE Trans. Plasma Sci., 44, 165–173.
• 10. Akel, M., & Lee, S. (2013). Radiative collapse in Plasma Focus operated with heavy noble gases. J. Fusion Energy, 32, 111–116.
• 11. Scholz, M., Miklaszewski, R., Gribkov, V. A., & Mezzetti, F. (2000). PF-1000 device. Nukleonika, 45(3), 155–158.
• 12. Kubes, P., Paduch, M., Cikhardt, J., Kravarik, J., Rezac, K., Kortanek, J., Cikhardtova, B., & Zielinska, E. (2015). Existence of a return direction for plasma escaping from a pinched column in a plasma focus discharge. Phys. Plasmas, 222, 052706.
• 13. Zielinska, E., Paduch, M., & Scholz, M. (2011). Sixteen-frame interferometer for a study of a pinch dynamics in PF-1000 device. Contrib. Plasma Phys., 51, 279–283.
• 14. Kubes, P., Paduch, M., Cikhardt, J., Kortanek, J., Cikhardtova, B., Rezac, K., Klir, D., Kravarik, J., & Zielinska, E. (2014). Filamentary structure of plasma produced by compression of puffing deuterium by deuterium or neon plasma sheath on plasma-focus discharge. Phys. Plasmas, 21, 122706.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.