NUKLEONIKA 2012, 57(2):189-192

 


INTERFEROMETRY OF THE PLASMA FOCUS EQUIPPED WITH FOREHEAD CATHODE



Pavel Kubeš1, Daniel Klír1, Karel Rezac1, Marian Paduch2, Tadeusz Pisarczyk2,
Marek Scholz2, Tomasz Chodukowski2, Zofia Kalinowska2, Jiří Hitschfel1, Jiří Kortanek1,
Josef Kravárik1, Irena Ivanova-Stanik2, Barbara Bienkowska1, Leslaw Karpinski1,
Ewa Zielinska1, Marek J. Sadowski2,3, Krzysztof Tomaszewski4

1 Czech Technical University (CVUT),
2 Technicka Str., 166-27 Prague 6, Czech Republic

2 Institute of Plasma Physics and Laser Microfusion, 23 Hery Str., 01-497 Warsaw, Poland
3 National Centre for Nuclear Research (NCBJ),
7 Andrzeja Sołtana Str., 05-400 Otwock/Świerk, Poland

3 ACS, 23 Hery Str., 01-497 Warsaw, Poland


The PF-1000 plasma-focus facility in Warsaw, equipped with Mather-type coaxial electrodes working with a deuterium filling, was modified by the addition of a cathode disk in front of the anode front-plate at a distance of 3 cm. The plasma was diagnosed with temporal resolved interferometry and neutron diagnostics. The modified electrode configuration showed an increase of the current in the pinch phase and a decrease of the total neutron yield. The lower total neutron yield is caused by a lower energy of deuterons producing the observed neutrons and by a decrease of the velocity of transformations of the structures in the pinch column.


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