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Emission of X-ray from 1kJ Plasma Focus Device and its Preliminary Applications |
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PP: 39-47 |
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Author(s) |
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F. Diab,
G. M. El-Kashef,
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Abstract |
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| A 1kJ Mother Type plasma focus (PF) device has been designed and constructed and energized by 30.84μf capacitors charged up to 8 kV giving a peak discharge current up to 150 kA, with rise time of 3μSec. The PF in this work is studied as a pulsed X-ray source, operated with Argon at a filling pressure in the range of 0.2 to 2 torr. The PF is a rich source of X-ray and the measurement and analysis of X-ray emitted from 1 kJ PF device has been carried out using a PIN diode, light guide, aluminum filter with different thicknesses. The X-ray emission produced by the plasma focus discharge is investigated. It is found that at the high pressure regime of more than 0.7 torr, very consistent and high output of X-ray radiation is obtained, at the peak of the discharge current and voltage. Multiple X-ray spikes corresponding to different voltage spikes at different instants have been observed. An indirect method to determine the electron temperature of the plasma is achieved by a PIN diode detector coupled with Al foil of different thicknesses. The result shows that the electron temperature of the plasma is ranged between 0.5 to 3 keV, when the operating pressure is 0.7 torr and charging voltage is 8 kV. Some physical properties of Polytetrafloroethylene (PTFE) films were studied. Therefore, in the present work, the change in the surface free energy of (PTFE) samples is reported. X-Ray Florescence (XRF) analysis showed that, there are some new elements appeared on the surface of the sample after exposed to the ion beam, these elements and their concentrations are recorded. |
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