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Scenario of a magnetic dynamo and magnetic reconnection in a plasma focus discharge

Matter and Radiation at Extremes 2020年第4期5卷 1-9页

作者： P.Kubes M.Paduch M.j.Sadowski j.Cikhardt D.Klir j.kravarik R.Kwiatkowski V.Munzar K.Rezac A.Szymaszek K.Tomaszewski E.Zielinska M.Akel B.Cikhardtova Czech Technical University 166-27 PragueCzech Republic Institute of Plasma Physics and Laser Microfusion 01-497 WarsawPoland National Centre for Nuclear Research 05-400Otwock-SwierkPoland ACS Ltd. 01-497 WarsawPoland Atomic Energy Commission P.O.Box 6091DamascusSyria

The paper discusses a possible energy transformation that leads to the acceleration of fast ions and *** plasma-focus discharges that occur during deuteriumfilling,which have amaximumcurrent of about 1MA,the accelerated deuterons produce fast fusion neutrons and fast electrons hard X-ray *** total energy,which is of the order of several kilojoules,can be delivered by the discharge through a magnetic dynamo and selforganization to the ordered plasma structures that are formed in a pinch during the several hundreds of nanoseconds of the pinch implosion,stagnation,and evolution of *** energy is finally released during the decay of the ordered plasma structures in the volume between the anode face and the umbrella front of the plasma and current sheath in the form of induced electric fields that accelerate fast electrons and ions.

关键词： magnetic finally acceleration

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Ion acceleration and neutron production in hybrid gas-puff z-pinches on the GIT-12 and HAWK generators

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Matter and Radiation at Extremes 2020年第2期5卷 33-42页

作者： D.Klir S.L.jackson A.V.Shishlov V.A.Kokshenev K.Rezac A.R.Beresnyak R.K.Cherdizov j.Cikhardt B.Cikhardtova G.N.Dudkin j.T.Engelbrecht F.I.Fursov j.Krasa j.kravarik P.Kubes N.E.Kurmaev V.Munzar N.A.Ratakhin K.Turek V.A.Varlachev Czech Technical University in Prague Faculty of Electrical Engineering16627 Prague 6Czech Republic Plasma Physics Division U.S.Naval Research LaboratoryWashingtonDistrict of Columbia 20375USA Institute of High Current Electronics SB RAS Tomsk634055Russia National Research Tomsk Polytechnic University Tomsk634050Russia Institute of Physics Academy of Sciences of Czech Republic18221 Prague 8Czech Republic Nuclear Physics Institute Academy of Sciences of Czech Republic18086 PragueCzech Republic

Z-pinch experiments with a hybrid configuration of a deuterium gas puff have been carried out on theHAWK(NRL,Washington,DC)and GIT-12(IHCE,Tomsk)pulsed power generators at 0.7 MA and 3MA currents,*** GIT-12,neutron yields reached an average value of 231012 neutrons,and deuterons were accelerated up to an energy of 30 *** was 50 times the ion energy provided by the generator driving voltage of 0.6 MV and the highest energy observed in z-pinches and dense plasma *** confirm these unique results independently on another device,we performed several experimental campaigns on *** of the experiments onGIT-12 andHAWKhelped us to understand which parameters are essential for optimized neutron *** theHAWKgenerator is of a similar pulsed power architecture as GIT-12,the experiments on GIT-12 and HAWK are important for the study of how charged-particle acceleration scales with the current.

关键词： acceleration generator independently

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Ion acceleration and neutron production in hybrid gas-puff z-pinches on the GIT-12 and HAWK generators

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Matter and Radiation at Extremes 2020年第2期 51-60页

作者： D.Klir S.L.jackson A.V.Shishlov V.A.Kokshenev K.Rezac A.R.Beresnyak R.K.Cherdizov j.Cikhardt B.Cikhardtova G.N.Dudkin j.T.Engelbrecht F.I.Fursov j.Krasa j.kravarik P.Kubes N.E.Kurmaev V.Munzar N.A.Ratakhin K.Turek V.A.Varlachev Czech Technical University in Prague Faculty of Electrical Engineering Plasma Physics Division U.S.Naval Research Laboratory Institute of High Current Electronics SB RAS National Research Tomsk Polytechnic University Institute of Physics Academy of Sciences of Czech Republic Nuclear Physics Institute Academy of Sciences of Czech Republic

Z-pinch experiments with a hybrid configuration of a deuterium gas puff have been carried out on the HAWK（NRL, Washington, DC） and GIT-12（IHCE, Tomsk） pulsed power generators at 0.7 MA and 3 MA currents, respectively. On GIT-12, neutron yields reached an average value of2 × 1012neutrons, and deuterons were accelerated up to an energy of 30 Me V. This was 50 times the ion energy provided by the generator driving voltage of 0.6 MV and the highest energy observed in z-pinches and dense plasma foci. To confirm these unique results independently on another device, we performed several experimental campaigns on the HAWK generator. Comparison of the experiments on GIT-12 and HAWK helped us to understand which parameters are essential for optimized neutron production. Since the HAWK generator is of a similar pulsed power architecture as GIT-12, the experiments on GIT-12 and HAWK are important for the study of how charged-particle acceleration scales with the current.

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