Detection of X-ray Radiations from Low Energy Focus Plasma Using Thermoluminescence Dosimeter TLD-500A

摘要

The present plasma focus device (0.1 kJ Mather type) is powered by a capacitor bank of 1 mu F at 15 kV maximum charging voltage. The radiations emission was investigated using time-integrated thermoluminescence TLD-500. These detectors have been calibrated against standard X-ray machine (VIC model 4000M(+)) as well as standard gamma sources (Co-60 and Cs-137) to identify the dose from X-ray delivered to the dosimeter. It is found that from the results of time-integrated detectors, the maximum radiation dose obtained at 0.1 Torr pressure and charging voltage 15 kV for different gases. At this pressure, the device favours a proper discharge dynamics so as to form a strong pinching i.e. transferring maximum energy into plasma.