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Plasma focus; solid state nuclear track detector; ion tracks.

The ion beam of a Mather-type 23.25 J plasma focus device operated with air filling at 10 Torr was registered using CR-39 nuclear track detector. The irradiated samples were etched in NaOH solution at $70^{\circ}$C for 1 h. It is found here that plasma beam contains multi-components of microbeams. The individual track density of microbeams is estimated and the total current density of the plasma stream is measured to be 1.2 mA/cm². A model for counting the track density of individual microbeams is proposed here. Faraday cup measurements showed the ion pulse with energy ranging from 5.8 keV to 3.3 keV.

G M El-Aragi¹ U Seddik² A Abd El-Haliem²

1. Nuclear Physics Department, Nuclear Research Center, Cairo, Egypt
2. Plasma Physics Department, Nuclear Research Center, Cairo, Egypt

Published

April 2007

Manuscript received

7 June 2006

Manuscript revised

25 December 2006

Accepted

5 January 2007