investigation the effect of anode’s insert material on spatial distribution of x-ray source in plasma focus device

In this paper, the effect of anode’s insert material on spatial distribution of x-ray emission zone of plasma focus device was studied. anode’s insert materials were fabricated out of aluminum, zinc, tin, tungsten and lead. for each insert material at the constant operating voltage of 21 kv, the image of pinhole camera which monitors the surface and the top of anode was recorded at the various pressures of 0.3, 0.6, 0.9 and 1.2 mbar. the results indicated that the x-ray emission zone above the anode surface not only includes thermal radiation of plasma, but also depends on anode’s insert materials. this zone could be due to the passage of high energy electrons from the vapor of anode’s material above the anode’s surface.