Results 251 to 260 of about 230,775 (291)

Fast-Neutron Source Based on Plasma-Focus Device

AIP Conference Proceedings, 2008
This paper describes investigations of neutrons produced by small plasma focus device PF-6 operating in the Institute of Plasma Physics and Laser Microfusion, Warsaw, Poland. Main parameters of neutron radiation have been measured by scintillation probe, and by activation technique. Current derivative probe has also been applied to measure dI/dt signal.
M. Scholz, B. Bienkowska, M. Chernyshova, V. A. Gribkov, S. Jednorog, Z. Kalinowska, L. Karpinski, M. Paduch, R. Prokopowicz, A. Szydlowski, Hans-Jürgen Hartfuss, Michel Dudeck, Jozef Musielok, Marek J. Sadowski   +13 more
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Operating Regime in Low Energy Plasma Focus Devices

AIP Conference Proceedings, 1994
It is a well know fact that Plasma Focus devices suffer from several drawbacks which affect their efficiency as soft X‐ray, electron and ion beams or neutron sources. Among others, current leakages in the vicinity of the insulator and bad shaped current sheaths during the early stages of the discharge have been signaled as causes which can lead to an ...
H. Bruzzone, D. Grondona, H. Kelly, A. Márquez, C. Moreno, R. Vieytes, Malcolm Haines, Andrew Knight   +7 more
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The three-phase theory for plasma focus devices

IEEE Transactions on Plasma Science, 1997
A simplified theory for preliminary design of plasma focus devices that starts at the breakdown phase is proposed. For best focus, it is shown that the model can be used to predict the values of the inner and outer electrode radius, inner electrode length, gas pressure, and charging voltage that give minimum possible pinch radius.
M. Mathuthu, T.G. Zengeni, A.V. Gholap
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Application of Plasma Focus Device to Compression of Toroidal Plasma

Japanese Journal of Applied Physics, 1980
A new concept of compressing a toroidal plasma using a plasma focus device is considered. Maximum compression ratio of toroidal plasma is determined merely by the initial density ratio of the toroidal plasma to a sheet plasma in a focus device because of the Rayleigh-Taylor instability, An initiation senario of plasma-liner is also proposed with a ...
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Parametric studies in a small plasma focus device

IEEE Conference Record - Abstracts. 1996 IEEE International Conference on Plasma Science, 1996
Summary form only given. Very high temperature and density plasmas can be produced in modest size plasma focus devices at the kJ level. Apart from basic scientific interests, such plasmas are of fundamental importance in the production of X-rays and particle beams for a wide range of technological applications.
H. Chuaqui, P. Choi, M. Favre, P. Silva, E. Wyndham   +4 more
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Simulation of Plasma Focus Devices with Hemisphere Electrodes

Journal of Fusion Energy, 2009
A magneto-hydrodynamic simulation of a plasma focus device with hemisphere electrodes is constructed. The snowplow model is used with help of the momentum conservation equation to describe the motion of the plasma sheath between the two concentric hemispheres.
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Preliminary results from 1.2 MJ plasma focus device

International Conference on Plasma Science (papers in summary form only received), 1995
Summary form only given, as follows. Preliminary results from 1.2 MJ plasma-focus device PF-1000 operating at the moment within the energy range 100-250 kJ are presented. The following diagnostic equipment is used during the first stage of investigations: fast streak and electro-optical cameras; one-frame laser interferometry and shadowgraphy; X-ray ...
M. Borowjecki, A.V. Dubrovski, V.A. Gribkov, J. Jakubowski, L. Karpinski, R. Miklaszewski, M.P. Scholz, W. Stepniews   +7 more
openaire   +1 more source

Structural transformations of pinched column in plasma focus device

2015 IEEE International Conference on Plasma Sciences (ICOPS), 2015
The experimental research of fusion DD reaction was provided on the plasma focus device PF-1000 in IPPLM in Warsaw, Poland at the current of 2 MA. The multiframe interferometry diagnostics showed existence of the dense internal structures of spherical-, toroidal-, helical- and disclike forms in the column.
Pavel Kubes, Marian Paduch, Jakub Cikhardt, Jiri Kortanek, Balzhima Cikhardtova, Karel Rezac, Daniel Klir, Jozef Kravarik, Ewa Zielinska   +8 more
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Current and Perspective Applications of Dense Plasma Focus Devices

AIP Conference Proceedings, 2008
Dense Plasma Focus (DPF) devices' applications, which are intended to support the main‐stream large‐scale nuclear fusion programs (NFP) from one side (both in fundamental problems of Dense Magnetized Plasma physics and in its engineering issues) as well as elaborated for an immediate use in a number of fields from the other one, are described.
V. A. Gribkov, Carlos Varandas, Carlos Sliva   +2 more
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Evaluation of D-T plasma focus devices for BNCT

Journal of Instrumentation, 2018
In this study, D-T Plasma Focus Devices (PFDs) have been evaluated for Boron Neutron Capture Therapy (BNCT). To do this, a typical D-T PFD has been considered as a neutron source. As useful neutrons for BNCT are epithermal neutrons in energy range from 1 eV to 10 keV, a Beam Shaping Assembly (BSA) has been proposed and investigated to convert the 14.1 ...
E. Bavarnegin, Y. Kasesaz
openaire   +1 more source