Abstract
Scattered ionizing radiation emissions from a low-energy plasma focus (0.1 kJ Mather-type) device operating with different gases were studied. The plasma focus device was powered by a capacitor bank of 1 µF at 18 kV maximum charging voltage. The radiation emissions were investigated using time-integrated thermoluminescence TLD-500. These detectors were calibrated against standard X-ray machine as well as standard γ sources (60Co and 137Ca). Calibration of detectors showed linear relation over all the region of measurements. It was found that radiation levels would be minimum for different gases, when the gas pressure was between 0.5 and 0.8 Torr. Only helium deviated from this phenomenon as it gave maximum radiation level at 0.8 Torr pressure. It was also found that, for all the gases used, the radiation levels were maximum when the applied voltage was 15 keV.
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