Studies of plasma interactions with tungsten targets in PF-1000U facility

• Autorzy: Ladygina M. S. , Skladnik-Sadowska E. , Zaloga D. R. , Sadowski M. J. , Kubkowska M. , Kowalska-Strzeciwilk E. , Krawczyk N. , Paduch M. , Miklaszewski R. , Garkusha I. E.

Identyfikatory

DOI

10.1515/nuka-2016-0026

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

Abstrakty

EN

This paper presents results of experimental studies of tungsten samples of 99.95% purity, which were irradiated by intense plasma-ion streams. The behaviour of tungsten, and particularly its structural change induced by high plasma loads, is of great importance for fusion technology. The reported measurements were performed within a modifi ed PF-1000U plasma-focus facility operated at the IFPiLM in Warsaw, Poland. The working gas was pure deuterium. In order to determine the main plasma parameters and to study the behaviour of impurities at different instants of the plasma discharge, the optical emission spectroscopy was used. The dependence of plasma parameters on the initial charging voltage (16, 19 and 21 kV) was studied. Detailed optical measurements were performed during interactions of a plasma stream with the tungsten samples placed at the z-axis of the facility, at a distance of 6 cm from the electrode outlets. The recorded spectra showed distinct WI and WII spectral lines. Investigation of a target surface morphology, after its irradiation by intense plasma streams, was performed by means of an optical microscope. The observations revealed that some amounts of the electrodes material (mainly copper) were deposited upon the irradiated sample surface. In all the cases, melted zones were observed upon the irradiated target surface, and in experiments performed at the highest charging voltage there were formed some cracks.

Słowa kluczowe

EN

plasma-surface interaction; plasma streams; tungsten; plasma focus; PF-1000U

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2016
• Tom: Vol. 61, No. 2
• Strony: 149--153
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Ladygina M. S.

• Institute of Plasma Physics, NSC KIPT, 61108 Kharkov, Ukraine, Tel.: [phone], Fax: [phone]

autor

Skladnik-Sadowska E.

• National Centre for Nuclear Research (NCBJ), 7 Andrzeja Soltana Str., 05-400 Otwock/Swierk, Poland

autor

Zaloga D. R.

• National Centre for Nuclear Research (NCBJ), 7 Andrzeja Soltana Str., 05-400 Otwock/Swierk, Poland

autor

Sadowski M. J.

• National Centre for Nuclear Research (NCBJ), 7 Andrzeja Soltana Str., 05-400 Otwock/Swierk, Poland and Institute of Plasma Physics and Laser Microfusion (IFPiLM), 23 Hery Str., 01-497 Warsaw, Poland

autor

Kubkowska M.

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

autor

Kowalska-Strzeciwilk E.

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

autor

Krawczyk N.

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

autor

Paduch M.

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

autor

Miklaszewski R.

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

autor

Garkusha I. E.

• Institute of Plasma Physics, NSC KIPT, 61108 Kharkov, Ukraine, Tel.: [phone], Fax: [phone]

Bibliografia

• 1. Pitts, R. A., Carpentier, S., Escourbiac, F., Hirai, T., Komarov, V., Lisgo, S., Kukushkin, A. S., Loarte, A., Merola, M., Sashala Naik, A., Mitteau, R., Sugihara, M., Bazylev, B., & Stangeby, P. C. (2013). A full tungsten divertor for ITER: Physics issues and design status. J. Nucl. Mater., 438, S48–S56. DOI: 10.1016/j.jnucmat.2013.01.008.
• 2. Kubkowska, M., Skladnik-Sadowska, E., Kwiatkowski, R., Malinowski, K., Kowalska-Strzęciwilk, E., Paduch, M., Sadowski, M. J., Pisarczyk, T., Chodukowski, T., Kalinowska, Z., Zielinska, E., & Scholz, M. (2014). Investigation of interactions of intense plasma streams with tungsten and carbon fibre composite targets in the PF-1000 facility. Phys. Scr., T161, 014038. DOI: 10.1088/0031-8949/2014/T161/014038.
• 3. Scholz, M., Drozdowicz, K., Karpinski, L., Krauz, V., Kubes, P., Paduch, M., Pisarczyk, T., Sadowski, M. J., Woznicka, U., Zielinska, E., Czaus, K., Malinowski, K., Skladnik-Sadowska, E., & Zebrowski, J. (2013). Status of Plasma-Focus research in Poland. In Proceedings International Conference PLASMA-2013, Warsaw, Poland, 2–6 September 2013. (Tutorial lecture T10).
• 4. Skladnik-Sadowska, E., Kwiatkowski, R., Malinowski, K., Sadowski, M. J., Gribkov, V. A., Kubkowska, M., Paduch, M., Scholz, M., Zielinska, E., Demina, E. V., Maslyaev, S. A., & Pimenov, V. N. (2014). Research on interactions of intense plasma-ion streams with a SiC target in a modifi ed PF-1000 facility. Phys. Scr., T161, 014039. DOI: 10.1088/0031-8949/2014/T161/0140039.
• 5. Zaloga, D. R., Skladnik-Sadowska, E., Kubkowska, M., Ladygina, M. S., Malinowski, K., Kwiatkowski, R., Sadowski, M. J., Paduch, M., Zielinska, E., & Makhlaj, V. A. (2015). Comparison of optical spectra recorded during DPF-1000U plasma experiments with gas-puffi ng. Nukleonika, 60(2), 309–314. DOI:10.1515/nuka-2015-0058.
• 6. Skladnik-Sadowska, E., Malinowski, K., Sadowski, M. J., Wolowski, J., Gasior, P., Kubkowska, M.,Rosinski, M., Marchenko, A. K., & Sartowska, B.(2009). Spectroscopy of the tungsten plasma produced by pulsed plasma-ion streams or laser beams. J. Nucl. Mater., 390/391, 847–851. DOI: 10.1016/j.jnucmat.2009.01.223.

Uwagi

PL

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