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Studies of the spatial and temporal evolution of a dense plasma focus in the X-ray region

Published online by Cambridge University Press:  09 March 2009

P. Choi ,
C. S. Wong  and
H. Herold
P. Choi
Affiliation:
The Blackett Laboratory, Imperial College, London SW7 2BZ, U.K.
C. S. Wong
Affiliation:
Institut fur Plasmaforschung, Universitaet Stuttgart, D7000 Stuttgart 80, F.R.G.
H. Herold
Affiliation:
Institut fur Plasmaforschung, Universitaet Stuttgart, D7000 Stuttgart 80, F.R.G.
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Abstract

The dynamics of the plasma evolution in a dense plasma focus has been studied using a streak camera system in the soft X-ray region. The experiments were performed on a medium energy plasma focus operating with a hydrogen-argon admixture. The streak camera system employed provides nanosecond resolution and allows the plasma to be viewed simultaneously through two different filters to achieve energy resolution. Observations are made in the radial direction and along the pinch axis. Collimated X-ray PIN diodes suitably filtered were used to provide additional information on the structure of the X-ray emitting regions of the plasma. The plasma focus is observed to be totally dynamical and continuously evolving in nanosecond time scale. Hot spots are observed to form among the moving plasma at various times. Such continuous nanosecond time scale evolution of the focus pinch in the X-ray region have not been reported previously.

Information

Type
Research Article
Information
Laser and Particle Beams , Volume 7 , Issue 4 , November 1989 , pp. 763 - 772
Copyright
Copyright © Cambridge University Press 1989

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Footnotes

†

Fellow of the Alexander von Humboldt Stiftung; on leave from Plasma Research Laboratory, Physics Department, University of Malaya, 59100 Kuala Lumpur, Malaysia.

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