Formation of a pinched electron beam and an intense x-ray source in radial foil rod-pinch diodes

Journal Article · Fri Apr 15 04:00:00 EDT 2016 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4947029· OSTI ID:22599152

Sorokin, S. A. ^[1]

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1. Institute of High Current Electronics SB RAS, 2/3 Akademichesky Ave., Tomsk 634055 (Russian Federation)

Low-impedance rod-pinch diode experiments were performed on the MIG generator at Institute of High Current Electronics using an aluminum foil placed between concentric electrodes of a rod-pinch diode. The J × B force accelerates the foil plasma in the axial and radial directions. After the foil plasma is pushed beyond the tip of the rod, a vacuum gap and a pinched electron beam form. The anode and cathode plasmas expansion and the following plasmas sweeping up by the J × B force can result in repetitive gap formations and closures, which are evident in the several successive intense x-ray pulses. A 0.7-mm-size point-like x-ray source was realized using a 1-mm-diameter tungsten rod, tapered to a point over the last 10 mm. The results of experiments show that the foil-shorted rod-pinch diode configuration has the potential to form low-impedance diodes, to shorten x-ray pulse duration and to realize submillimeter spot-size x-ray sources.

• OSTI ID: 22599152
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 4 Vol. 23; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM
ANODES
CATHODES
CLOSURES
CONFIGURATION
ELECTRON BEAMS
ELECTRONS
FOILS
IMPEDANCE
PLASMA
PLASMA EXPANSION
PULSES
TUNGSTEN
X RADIATION
X-RAY SOURCES