Abstract
In a low energy Mather-type plasma focus energized by a single 32 μF capacitor, the x-ray and neutron emission is investigated using time-integrated and time-resolved detectors. The x-ray emission profile has a width (FWHM) of 40–50 ns. The neutron emission profile is broader compared to the x-ray emission profile and also delayed by 30–40 ns. To identify different regimes of x-ray emission, an x-ray pin-hole camera along with different absorption filters is employed. While the x-ray emission is high within a narrow pressure range of 2.0–2.5 mbar, the neutron emission is intense for a wider range of 1.0–4.5 mbar. The intense x-ray emission seems to originate from the axially moving shock wave. These results also indicate rather different production mechanisms for x-ray and neutron emission. Also on comparing the x-ray images with Al(2 μm), Al(5 μm), Al(9 μm) filters, we find that the bulk of x-rays from the focus filament have energies less than 2 keV.
Published Version
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