Detection of X-Ray from Micro-Focus Plasma (0.1 kJ)

Full text: The X-ray emission was studied from low energy (112.5J) plasma focus device powered by a 1 mF single capacitor charged at 15 kV giving maximum discharge current of about 5 kA. The experiment was carried out on a conventional Mather-type plasma focus system and high density plasma was generated by an electrical discharge in helium gas between coaxial electrodes configuration. The X-ray emission was investigated using time-integrated and time-resolved detectors. Time-integrated X-ray pinhole images (side on) of the focus region at optimum pressure indicate a pinched volume roughly 8 - 10 mm in length. Time-resolved X-ray emission profile using pin-diode with suitable absorption filter has pulse width (FWHM) ∼ 100 ns. The aim from this work is to investigate X-rays emission in a low energy Mather type plasma focus (112.5 J) using X-ray detectors. (author)