Document Type: Original Article
Department of Nuclear Engineering, Faculty of Advanced Science & Technologies, University of Isfahan, Isfahan, Iran
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.
- X-ray emitting zone changes with gas pressure and anode's insert metal.
- Spatial distribution of X-rays from anode's surface depends on the characteristics of the electron beam.
- Spatial distribution of X-rays from the plasma above the anode depends on properties of the working gas.
- Size and intensity of X-ray source increases with atomic number of the insert materials.