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Research on spatial and energetic characteristics of the ion beams emitted in the PF - 360 discharges

Treść / Zawartość
Identyfikatory
Warianty tytułu
Konferencja
10th International Workshop and Summer School "Towards Fusion Energy", 12-18 June 2011, Kudowa Zdrój, Poland
Języki publikacji
EN
Abstrakty
EN
Experimental results are presented on the spatial structure and energetic characteristics of the fast ion beams produced by high-current discharges in a PF-360 device operated at the National Centre for Nuclear Research (NCBJ, Otwock/Świerk, Poland). The 105 kJ discharges were initiated at the initial deuterium pressure around p0 = 6 hPa and were powered from a 234 miF capacitor bank charged up to 30 kV. The spatial structure of the ion beams was recorded using pinhole cameras equipped with the solid-state nuclear track detectors of the PM-355 type, placed at two different angles (0 centigrade, 45 centigrade) relative to the discharge axis. The detectors were shielded by thin absorption filters made of pure Al foils of various thickness, which made it possible to record only ions with energies exceeding a chosen threshold value. Similarly as in other plasma focus (PF) experiments, energies of the emitted ions ranged from about 30 keV to about 3 MeV, i.e. they were much higher than the voltage applied to the electrodes. The recorded ion images showed a complex spatial structure of the fast ion beams, which consisted of many micro-beams of different energies. It is possible that these beams were emitted by various local micro-sources (e.g. plasma micro-diodes) the were formed inside the PF pinch column.
Słowa kluczowe
Czasopismo
Rocznik
Strony
67--74
Opis fizyczny
Bibliogr. 9 poz., rys.
Twórcy
autor
autor
  • National Centre for Nuclear Research (NCBJ), 7 Andrzeja Sołtana Str., 05-400 Otwock/Swierk, Poland, Tel.: +48 22 718 0417, Fax: +48 22 779 3481, Roch.Kwiatkowski@ncbj.gov.pl
Bibliografia
  • 1. Bernard A, Bruzzone H, Choi P et al. (1998) Scientific status of plasma focus research. J Moscow Phys Soc 8:93–170
  • 2. Herold H, Jerzykiewicz A, Sadowski MJ, Schmidt H (1989) Comparative analysis of large plasma focus experiments performed at IPF, Stuttgart, and IPJ, Swierk. Nucl Fusion 29:1255–1269
  • 3. Sadowski MJ, Czaus K, Malinowski K, Skladnik-Sadowska E, Zebrowski J (2009) Mass- and energy-analyses of ions from plasma by means of a miniature Thomson spectrometer. Rev Sci Instrum 80:053504 (4 pp)
  • 4. Scholz M, Bienkowska B, Ivanova-Stanik IM et al. (2006) Studies of pinch dynamics and fusion-products emission within megajoule plasma-focus facility. Rus Phys J 49:161–164
  • 5. Skladnik-Sadowska E, Baranowski J, Milanese M et al. (2001) Spatial structure and energy spectrum of ion beams studied with CN detectors within a small PF device. Radiat Meas 34:315–318
  • 6. SRIM Textbook, http://www.srim.org
  • 7. Steinmetz K, Hubner K, Rager JP, Robouch BV (1982) Neutron pinhole camera investigation on temporal and spatial structures of plasma focus neutron source. Nucl Fusion 22:25–30
  • 8. Zebrowski J (2006) Studies of corpuscular and X-ray radiation emitted from plasma-focus discharges. PhD Thesis, Institute for Nuclear Studies, Otwock/Świerk, Poland
  • 9. Zebrowski J, Sadowski MJ, Czaus K, Paduch M, Tomaszewski K (2004) Peculiar features of plasma-focus discharges within PF-360 facility. Czech J Phys 54:643–659
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ8-0017-0010
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