Effect of Cathode Designs on Radiation Emission of Compact Diode (CD) Device |
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Authors: | Muhammad Zubair Khan Seong Ling Yap Muhammad Afzal Khan Attiq-ur-Rehman Muhammad Zakaullah |
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Affiliation: | 1. Plasma Research Laboratory, Department of Physics, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia 2. Department of Physics, Federal Urdu University of Arts, Science and Technology, Islamabad, 45320, Pakistan 3. Department of Physics, Quaid-i-Azam University, Islamabad, 45320, Pakistan 4. Centre of Advance Studies of Physics, Government College University, Lahore, Lahore, Pakistan
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Abstract: | A comparative study on the radiation emission such as X-ray yield and efficiency has been carried out in compact diode device. Two different designs of cathode having sharp-edged razor blade (of 0.5 mm thickness with width 2 mm) and a sewing machine needle (of 0.5 mm diameter at tip with length of 39 mm) have been tested for this study. The radiation emission (X-ray yield) was determined by employing two set of PIN diodes at fixed positions. The maximum X-ray yield depends on cathode designs and electrodes separation in few mm. The yield of X-ray is small in the case of sharp-edged razor blade cathode than the sewing machine needle cathode. The X-ray yield, measured by 4π-geometry, shows its dependence on the cathode designs. The maximum X-ray yield is found to be 939.2 ± 65.7 mJ with efficiency of 0.4142 ± 0.0289%. This study indicates that the compact diode device could be optimized to a great extent for optimal X-ray yield by using an appropriate cathode design. |
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