Results 241 to 250 of about 182,466 (287)

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
openaire   +1 more source

Dense-plasma spheromak in plasma focus experiments

International Conference on Plasma Science (papers in summary form only received), 1995
Summary form only given, as follows. Experimental evidence is presented for the formation, formerly predicted, of a closed, spheromak-like magnetic configuration (SLMC) by the plasma-focus-self-transformed magnetic field. The SLMC formation is characterized by (1) self-consistent generation of a poloidal magnetic field (the dynamo effect); (2) strong ...
A.B. Kukushkin, N.A. Rantsev-Kartinov, A.R. Terentiev   +2 more
openaire   +1 more source

Dynamics of a microscale dense plasma focus

2011 Abstracts IEEE International Conference on Plasma Science, 2011
Experimental results are presented for a sub-millimeter dense plasma focus (DPF). Reducing the DPF from cm to µm sizes allows for unique applications such as portable neutron based detectors. With smaller size efficiency is expected to increase, but total neutron emission will be lower.
W. Pollard, A. Duggleby, D. Staack
openaire   +1 more source

Ion Heating in the Dense Plasma Focus

The Physics of Fluids, 1971
The collapse phase of a dense plasma focus gun operating in deuterium was studied using streak photography and time resolved x-ray and neutron measuring techniques. The streak photographs, showing the radial motion of the luminous front at various axial positions, indicate a collapsing luminous front at the time of the current collapse followed by an ...
A. J. Toepfer, D. R. Smith, E. H. Beckner   +2 more
openaire   +1 more source

Neutronics of a Dense-Plasma Focus—An Investigation of a Fusion Plasma

Nuclear Science and Engineering, 1977
Experimental work on the dense-plasma focus device Julich I is presented. The main objective of this program was the development of a neutron source for controlled thermonuclear reactor application...
P. Cloth, H. Conrads
openaire   +1 more source

Dense plasma in Z-pinches and the plasma focus

Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1981
Abstract Many of the earliest experiments in controlled thermonuclear fusion research were Z-pinches. However these pinches were found to be highly unstable to the m = 0, the m — 1 (kink), and the Rayleigh-Taylor instability. The addition of an axial magnetic field and the removal of end losses by proceeding to a toroidal geometry has
openaire   +1 more source

Characteristics of the Dense Plasma Focus Discharge

The Physics of Fluids, 1968
The dense plasma focus discharge is produced in a hydromagnetic coaxial plasma accelerator. The final heating and compression of the plasma is accomplished by a partial conversion of the stored magnetic energy residing in the region behind the current sheath to plasma energy.
Joseph W. Mather, Paul J. Bottoms
openaire   +1 more source

Neutron Yield in a Repetitive Dense Plasma Focus

Japanese Journal of Applied Physics, 1982
A first, preliminary result of the neutron yield from a repetitively produced dense plasma focus is reported, where the repetitive focalization of plasma is performed at the top end of the inner electrode of the plasma focus device. The number of repetitions of plasma was elected to be more than 10 in a single discharge of the capacitor bank.
Isao Ueno, Kazunari Ikuta, Yuichi Taguchi, Mitsumori Tanimoto, Masaharu Nakazawa, Giyuu Kido   +5 more
openaire   +1 more source

Infrared radiation from the dense plasma focus

The Physics of Fluids, 1974
Experimental observations of infrared emission (2-10.6 μm) from a dense plasma focus have been made, along with the standard diagnostics of neutrons, x rays, and visible light. The thermal bremsstrahlung spectrum has been observed over the range 2 μm ≲ λ ≲ 6.5 μm.
Richard S. Post, T. C. Marshall
openaire   +1 more source

Initial conditions in the hawk dense plasma focus

2019 IEEE Pulsed Power & Plasma Science (PPPS), 2019
The 670 kA Hawk pulsed power generator at NRL has been configured as a fast (1.2 µs rise time), high inductance (607 nH) driver for a dynamic dense plasma focus (DPF) load in order to create a testbed for the study of charged particle acceleration mechanisms in imploding plasmas. The current pulse is initiated in a deuterium plasma injected radially by
J. T. Engelbrecht, S. L. Jackson, A. A. Mamonau, A. R. Beresnyak, K. Rezac, J. Cikhardt, D. Klir, B. V. Weber, J. L. Giuliani, J. W. Schumer   +9 more
openaire   +1 more source