Results 251 to 260 of about 181,532 (295)

15. Dense Plasma Focus

1971
Publisher Summary This chapter describes the dense plasma focus. Dense plasma focus (DPF) is a plasma discharge with plasma densities n > l0 l9 /cm 3 and temperatures of a few kilo electron volts lasting 100 to 150 nsec. The focus is conjectured to be a short but finite two-dimensional z -pinch forming near or at the end of a coaxial plasma ...
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Restrike Particle Beam Experiments on a Dense Plasma Focus. Opening Switch Research on a Dense Plasma Focus.

1985
Abstract : Research on this grant has focused on plasma focus experiments in the areas of particle beam generation and as a potential repetitive opening switch. In pursuing the former unique diagnostic tools were developed to measure the scaling of particle beam current and energy for both the electron and ion beams generated by the device ...
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The Dense Plasma Focus: A Versatile Dense Pinch for Diverse Applications

IEEE Transactions on Plasma Science, 2012
The dense plasma focus (DPF) is a Z-pinch that has been studied for 50 years. Within ten years of its discovery by Fillipov and Fillipova in Russia and Mather in the USA, this dense pinch was scaled up to 2-MA currents and neutron outputs of ~ 1012/pulse.
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Hydromagnetic Instabilities in the Dense Plasma Focus

The Physics of Fluids, 1969
Coaxial discharges of the Mather type owe their performance to the rapid collapse of a noncylindrical current sheath into a dense plasma focus. The lifetime of the resulting fountainlike pinch column appears to be governed by the formation of sausage instabilities; however, typical estimates of the buildup time for m = 0 hydromagnetic instabilities in ...
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Ion beam generating mechanism in dense plasma focus

IEEE Conference Record - Abstracts. 1996 IEEE International Conference on Plasma Science, 1996
Summary form only given. A model for generating high electric fields for charged particle acceleration in dense plasma focus (DPF) devices has been developed. The mechanism found to be responsible for the generation of high electric fields is a magnetic Rayleigh-Taylor instability seeded by major features in the electrode geometry of DPF devices.
G. Nakafuji, R. Faehl, K. McLenithan, M. Sheppard, null Chan Choi, B. Freeman   +5 more
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Applications of a neutron-producing dense plasma focus

SPIE Proceedings, 1997
A plasma focus is an rz-plasma pinch device that may preferentially produce either x-rays or neutrons. In its neutron-production mode, the neutron pulse duration is approximately 10 12 neutrons/pulse from the d(d,n) 3 He(dd) reaction. The equivalent neutron yield form the d(t,n) 4 He(dt) reaction is approximately 10 14 neutrons/pulse.
Floyd. D. McDaniel, B. L. Freeman, C. M. Fowler   +2 more
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The nitriding of aluminium by dense plasma focus

Plasma Sources Science and Technology, 2006
High current, short length nitrogen ion beam pulses emanating from a low energy (1.8 kJ) Mather type plasma focus device are utilized for room temperature surface nitriding of aluminium specimens. X-ray diffraction (XRD), scanning electron microscopy and microhardness are used to study the surfaces of untreated and treated specimens.
Mehboob Sadiq, S Ahmad, A Waheed, M Zakaullah   +3 more
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Gas-injection Experiments On A Dense Plasma Focus

Proceedings of 1994 IEEE 21st International Conference on Plasma Sciences (ICOPS), 2005
Rockford Technology Associates, Inc. (RTA) has been doing experiments on the Dense Plasma focus (DPF) device at the Fusion Studies Laboratory of the University of Illinois. This DPF consists of four racks of five 2-{mu}F capacitors whose charge is switched onto the inner electrode of a plasma focus by four Trigatron spark gaps.
O. Barnouin, J. Javedani, S.D. Medico, G.H. Miley, B. Bromley   +4 more
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Comparisons of dense-plasma-focus kinetic simulations with experimental measurements

Physical Review E, 2014
Dense-plasma-focus (DPF) Z-pinch devices are sources of copious high-energy electrons and ions, x rays, and neutrons. The mechanisms through which these physically simple devices generate such high-energy beams in a relatively short distance are not fully understood and past optimization efforts of these devices have been largely empirical.
A, Schmidt, A, Link, D, Welch, J, Ellsworth, S, Falabella, V, Tang   +5 more
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Numerical parameter studies for the dense plasma focus

Plasma Physics, 1975
The magnetohydrodynamic equations are solved using an explicit numerical scheme for the focus geometry together with the electrical circuit equation. The influence of varying circuit parameters, focus apparatus dimensions and filling pressure on the discharge characteristics, especially the maximum current, and the plasma variables in the pinch phase ...
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