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Journal
2015 | 60 | 2 | 293-296
Article title

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

Content
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Languages of publication
EN
Abstracts
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.
Publisher
Journal
Year
Volume
60
Issue
2
Pages
293-296
Physical description
Dates
published
1 - 6 - 2015
received
12 - 6 - 2014
online
22 - 6 - 2015
accepted
5 - 1 - 2015
References
  • 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 fibre composite targets in the PF-1000 facility. Phys. Scripta, T161, 014038. DOI: 10.1088/0031-8949/2014/T161/014038.[Crossref][WoS]
  • 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 modified PF-1000 facility. Phys. Scripta, T161, 014039. DOI: 10.1088/0031-8949/2014/T161/0140039.[Crossref][WoS]
  • 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.[Crossref][WoS]
  • 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-fiber composites using a PF-1000 plasma-focus device. Phys. Scripta, 83, 045606. DOI: 10.1088/0031-8949/83/04/045606.[Crossref][WoS]
  • 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.
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.-psjd-doi-10_1515_nuka-2015-0048
Identifiers
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