PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Tytuł artykułu

Evolution of the small ball-like structures in the plasma focus discharge

Treść / Zawartość
Identyfikatory
Warianty tytułu
Konferencja
PLASMA-2015 International Conference on Research and Applications of Plasmas (7-11 September 2015 ; Warsaw, Poland)
Języki publikacji
EN
Abstrakty
EN
The experiments were carried out in the PF-1000 plasma-focus device at the maximum current reaching about 2 MA, at the deuterium or neon filling and with deuterium injected from a gas-puff nozzle placed on the axis of the anode face. Ball-like structures of diameters of 1–12 mm were identifi ed in interferometric and XUV pinhole camera frames. We made the statistical description of their parameters. A lifetime of the ball- -like structures was in the range from 30 to 210 ns, and in some cases even more. These structures appeared mostly at the surface of the imploding plasma shell and they did not change their position in relation to the anode end. During the evolution of these structures, interferometric fringes were observed near the surfaces of the structures only, and their internal parts were initially chaotic (without noticeable) fringes. Subsequently the number of interferometric fringes increased (the internal ‘chaotic’ area was fi lled with fringes too) and later on it decreased. The radii of the ball-like structures were mostly increasing during their existence. The maximum electron density reached the value of 1024 to 1025 m–3. The ball-like structures decayed by absorption inside the expanded pinch column and/or gradually expired in rare plasma outside of the dense plasma column.
Czasopismo
Rocznik
Strony
155--159
Opis fizyczny
Bibliogr. 5 poz., rys.
Twórcy
  • Faculty of Electrical Engineering, Czech Technical University in Prague (CVUT), Technická 2, 166 27, Prague, Czech Republic, Tel.: +420 2 2435 2359, Fax: +420 2 3333 7031
autor
  • Faculty of Electrical Engineering, Czech Technical University in Prague (CVUT), Technická 2, 166 27, Prague, Czech Republic, Tel.: +420 2 2435 2359, Fax: +420 2 3333 7031
autor
  • Faculty of Electrical Engineering, Czech Technical University in Prague (CVUT), Technická 2, 166 27, Prague, Czech Republic, Tel.: +420 2 2435 2359, Fax: +420 2 3333 7031
autor
  • Institute of Plasma Physics and Laser Microfusion (IPPLM), 23 Hery Str., 01-497 Warsaw, Poland
autor
  • Institute of Plasma Physics and Laser Microfusion (IPPLM), 23 Hery Str., 01-497 Warsaw, Poland
autor
  • Faculty of Electrical Engineering, Czech Technical University in Prague (CVUT), Technická 2, 166 27, Prague, Czech Republic, Tel.: +420 2 2435 2359, Fax: +420 2 3333 7031
autor
  • Faculty of Electrical Engineering, Czech Technical University in Prague (CVUT), Technická 2, 166 27, Prague, Czech Republic, Tel.: +420 2 2435 2359, Fax: +420 2 3333 7031
autor
  • Faculty of Electrical Engineering, Czech Technical University in Prague (CVUT), Technická 2, 166 27, Prague, Czech Republic, Tel.: +420 2 2435 2359, Fax: +420 2 3333 7031
Bibliografia
  • 1. 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 puffi ng deuterium by deuterium or neon plasma sheath on plasma-focus discharge. Phys. Plasmas, 21, 122706.
  • 2. Kubes, P., Paduch, M., Cikhardt, J., Kortanek, J., Batobolotova, B., Rezac, K., Klir, D., Kravarik, J., Surala, W., Zielinska, E., Scholz, M., Karpinski, L., & Sadowski, M. J. (2014). Neutron production from puffing deuterium in plasma focus device. Phys. Plasmas, 21, 082706.
  • 3. 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(2/3), 279–283.
  • 4. Ryutov, D. D. (2015). Characterizing the plasmas of dense Z-pinches. IEEE Trans. Plasma Sci., 43(8), 2363–2384.
  • 5. Kubes, P., Klir, D., Kravarik, J., Rezac, K., Kortanek, J., Krauz, V., Mitrofanov, K., Paduch, M., Scholz, M., Pisarczyk, T., Chodukowski, T., Kalinowska, Z., Karpinski, L., & Zielinska, E. (2013). Scenario of pinch evolution in a plasma focus discharge. Plasma Phys. Control. Fusion, 55, 035011.
Uwagi
PL
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-8e60efff-2cc3-4e59-b4a7-59a61e9449fc
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.