Study of tungsten surface interaction with plasma streams at DPF-1000U

• Autorzy: Ladygina M. S. , Skladnik-Sadowska E. , Zaloga D. R. , Malinowski K. , Sadowski M. J. , Kubkowska M. , Kowalska-Strzeciwilk E. , Paduch M. , Zielinska E. , Miklaszewski R. , Garkusha I. E. , Gribkov V. A.

Identyfikatory

DOI

10.1515/nuka-2015-0048

• Konferencja: Kudowa Summer School „Towards Fusion Energy” (12th ; 9-13.06.2014 ; Kudowa Zdrój, Poland)
• Języki publikacji: EN

Abstrakty

EN

In this note experimental studies of tungsten (W) samples irradiated by intense plasma-ion streams are reported. Measurements were performed using the modified plasma focus device DPF-1000U equipped with an axial gas-puffing system. The main diagnostic tool was a Mechelle®900 optical spectrometer. The electron density of a freely propagating plasma stream (i.e., the plasma stream observed without any target inside the vacuum chamber) was estimated on the basis of the half-width of the Dβ spectral line, taking into account the linear Stark effect. For a freely propagating plasma stream the maximum electron density amounted to about 1.3 × 1017 cm–3 and was reached during the maximum plasma compression. The plasma electron density depends on the initial conditions of the experiments. It was thus important to determine first the plasma flow characteristics before attempting any target irradiation. These data were needed for comparison with plasma characteristics after an irradiation of the investigated target. In fact, spectroscopic measurements performed during interactions of plasma streams with the investigated W samples showed many WI and WII spectral lines. The surface erosion was determined from mass losses of the irradiated samples. Changes on the surfaces of the irradiated samples were also investigated with an optical microscope and some sputtering and melting zones were observed.

Słowa kluczowe

EN

DPF-1000U; electron density; gas puffing; plasma stream; tungsten

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2015
• Tom: Vol. 60, No. 2
• Strony: 293--296
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Ladygina M. S.

• Institute of Plasma Physics, NSC KIPT, 61-108 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

Malinowski K.

• 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 (IPPLM), 23 Hery Str., 01-497 Warsaw, Poland

autor

Kubkowska M.

• In stitute of Plasma Physics and Laser Microfusion (IPPLM), 23 Hery Str., 01-497 Warsaw, Poland

autor

Kowalska-Strzeciwilk E.

• In stitute of Plasma Physics and Laser Microfusion (IPPLM), 23 Hery Str., 01-497 Warsaw, Poland

autor

Paduch M.

• In stitute of Plasma Physics and Laser Microfusion (IPPLM), 23 Hery Str., 01-497 Warsaw, Poland

autor

Zielinska E.

• In stitute of Plasma Physics and Laser Microfusion (IPPLM), 23 Hery Str., 01-497 Warsaw, Poland

autor

Miklaszewski R.

• In stitute of Plasma Physics and Laser Microfusion (IPPLM), 23 Hery Str., 01-497 Warsaw, Poland

autor

Garkusha I. E.

• Institute of Plasma Physics, NSC KIPT, 61-108 Kharkov, Ukraine, Tel.: [phone], Fax: [phone]

autor

Gribkov V. A.

• Institute of Plasma Physics and Laser Microfusion (IPPLM), 23 Hery Str., 01-497 Warsaw, Poland and A. A. Baikov Institute of Metallurgy and Material Science, 119991 Moscow, Russia

Bibliografia

• 1. 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 fi bre composite targets in the PF-1000 facility. Phys. Scripta,T161, 014038. DOI: 10.1088/0031-8949/2014/T161/014038.
• 2. 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. Scripta, T161, 014039. DOI: 10.1088/0031-8949/2014/T161/0140039.
• 3. 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.
• 4. 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 of International Conference PLASMA-2013, 2–6 September 2013 (T10). Warsaw, Poland.
• 5. Gribkov, V. A., Tuniz, C., Demina, E. V., Dubrovsky, A. V., Pimenov, V. N., Maslyaev, S. V., Gaffka, R., Gryaznevich, M., Skladnik-Sadowska, E., Sadowski, M. J., Miklaszewski, R., Paduch, M., & Scholz, M. (2011). Experimental studies of radiation resistance of boron nitrate, C2C ceramics Al2O3 and carbon--fi ber composites using a PF-1000 plasma-focus device.Phys. Scripta, 83, 045606. DOI: 10.1088/0031-8949/83/04/045606.
• 6. Jakubowska, K., Kubkowska, M., Skladnik-Sadowska,E., Malinowski, K., Marchenko, A., Paduch, M., Sadowski,M. J., & Scholz, M. (2011). Optical emission spectroscopy of plasma streams in PF-1000 experiments.Nukleonika, 56(2), 125–129.