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

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 pl...

Full description

Saved in:
Bibliographic Details
Published in:Physics of plasmas 2016-04, Vol.23 (4)
Main Author: Sorokin, S. A.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALUMINIUM
Aluminum
ANODES
Beamforming
CATHODES
CLOSURES
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONFIGURATION
Diodes
ELECTRON BEAMS
ELECTRONS
FOILS
IMPEDANCE
PLASMA
PLASMA EXPANSION
Plasma physics
Plasmas (physics)
Pulse duration
PULSES
TUNGSTEN
X RADIATION
X ray sources
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4947029