NDLI: A table-top plasma focus and its neutron emission

Content Provider	IEEE Xplore Digital Library
Author	Xinxin Wang Min Han Zhiwen Wang
Copyright Year	1998
Description	Author affiliation: Dept. of Electr. Eng., Tsinghua Univ., Beijing, China (Xinxin Wang)
Abstract	A 2.2 KJ, compact plasma focus device put on a small table was developed for a movable neutron source. The electrode geometry represents an accelerator of Mather type. Both anode (16 mm diam) and cathode are 85 mm in length and machined from oxygen-free copper. Two cathodes of different configuration were used. The first one (50 mm diam) is made of a cylinder and the second one (56 mm diam) made of 8 rods (14 mm in diam). An alumina insulator, 30 mm in length, was chosen. The DPF is powered by a 14 uF capacitor bank; a field distortion spark gap serves as switch. With the DPF in operation at 18 kV, a current peak of 230 kA occurs at 1.6 us, corresponding to a circuit inductance about 67 nH. The working gas is deuterium which was filled into the discharge chamber through a filter of an electrically heated palladium tube after the chamber was evacuated to a pre-fill vacuum of 10/sup -5/ Torr. Neutron output as measured with a silver activation counter was recorded side-on, i.e., perpendicular to the pinch axis, as a function of deuterium gas pressure for the cylinder cathode and the rods cathode. The neutron yield is strongly correlated with the amplitude of the well-known "dip" in di/dt curve.
File Size	68810
File Format	PDF
ISBN	0780347927
ISSN	07309244
DOI	10.1109/PLASMA.1998.677764
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-06-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radioactive decay Cathodes Plasma accelerators Neutrons Plasma devices Plasma sources Switches Deuterium Electrodes Geometry
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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