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Title: Catalytic action of {beta} source on x-ray emission from plasma focus

Abstract

The influence of preionization around the insulator sleeve by a mesh-type {beta} source ({sub 28}Ni{sup 63}) for the x-ray emission from a (2.3-3.9 kJ) plasma focus device is investigated. Quantrad Si p-i-n diodes along with suitable filters are employed as time-resolved x-ray detectors and a multipinhole camera with absorption filters is used for time-integrated analysis. X-ray emission in 4{pi} geometry is measured as a function of argon and hydrogen gas filling pressures with and without {beta} source at different charging voltages. It is found that the pressure range for the x-ray emission is broadened, x-ray emission is enhanced, and shot to shot reproducibility is improved with the {beta} source. With argon, the Cu K{alpha} emission is estimated to be 27.14 J with an efficiency of 0.7% for {beta} source and 21.5 J with an efficiency of 0.55% without {beta} source. The maximum x-ray yield in 4{pi} geometry is found to be about 68.90 J with an efficiency of 1.8% for {beta} source and 54.58 J with an efficiency of 1.4% without {beta} source. With hydrogen, Cu K{alpha} emission is 11.82 J with an efficiency of 0.32% for {beta} source and 10.07 J with an efficiency of 0.27% without {beta} source.more » The maximum x-ray yield in 4{pi} geometry is found to be 30.20 J with an efficiency of 0.77% for {beta} source and 25.58 J with an efficiency of 0.6% without {beta} source. The x-ray emission with Pb insert at the anode tip without {beta} source is also investigated and found to be reproducible and significantly high. The maximum x-ray yield is estimated to be 46.6 J in 4{pi} geometry with an efficiency of 1.4% at 23 kV charging voltage. However, degradation of x-ray yield is observed when charging voltage exceeds 23 kV for Pb insert. From pinhole images it is observed that the x-ray emission due to the bombardment of electrons at the anode tip is dominant in both with and without {beta} source.« less

Authors:
; ; ; ; ;  [1];  [2];  [2];  [2]
  1. Department of Physics, Quaid-i-Azam University, 45320 Islamabad (Pakistan)
  2. (Pakistan)
Publication Date:
OSTI Identifier:
20778558
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 77; Journal Issue: 1; Other Information: DOI: 10.1063/1.2162451; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ANODES; ARGON; CAMERAS; EFFICIENCY; ELECTRIC POTENTIAL; EMISSION; GEOMETRY; HYDROGEN; PLASMA; PLASMA FOCUS; PLASMA FOCUS DEVICES; TIME RESOLUTION; X RADIATION; X-RAY SOURCES; YIELDS

Citation Formats

Ahmad, S., Sadiq, Mehboob, Hussain, S., Shafiq, M., Zakaullah, M., Waheed, A., Department of Physics, University of Sargodha, Sargodha, Department of Physics, Quaid-i-Azam University, 45320 Islamabad, and PINSTECH, P.O. Box 1331, 44000 Islamabad. Catalytic action of {beta} source on x-ray emission from plasma focus. United States: N. p., 2006. Web. doi:10.1063/1.2162451.
Ahmad, S., Sadiq, Mehboob, Hussain, S., Shafiq, M., Zakaullah, M., Waheed, A., Department of Physics, University of Sargodha, Sargodha, Department of Physics, Quaid-i-Azam University, 45320 Islamabad, & PINSTECH, P.O. Box 1331, 44000 Islamabad. Catalytic action of {beta} source on x-ray emission from plasma focus. United States. doi:10.1063/1.2162451.
Ahmad, S., Sadiq, Mehboob, Hussain, S., Shafiq, M., Zakaullah, M., Waheed, A., Department of Physics, University of Sargodha, Sargodha, Department of Physics, Quaid-i-Azam University, 45320 Islamabad, and PINSTECH, P.O. Box 1331, 44000 Islamabad. Sun . "Catalytic action of {beta} source on x-ray emission from plasma focus". United States. doi:10.1063/1.2162451.
@article{osti_20778558,
title = {Catalytic action of {beta} source on x-ray emission from plasma focus},
author = {Ahmad, S. and Sadiq, Mehboob and Hussain, S. and Shafiq, M. and Zakaullah, M. and Waheed, A. and Department of Physics, University of Sargodha, Sargodha and Department of Physics, Quaid-i-Azam University, 45320 Islamabad and PINSTECH, P.O. Box 1331, 44000 Islamabad},
abstractNote = {The influence of preionization around the insulator sleeve by a mesh-type {beta} source ({sub 28}Ni{sup 63}) for the x-ray emission from a (2.3-3.9 kJ) plasma focus device is investigated. Quantrad Si p-i-n diodes along with suitable filters are employed as time-resolved x-ray detectors and a multipinhole camera with absorption filters is used for time-integrated analysis. X-ray emission in 4{pi} geometry is measured as a function of argon and hydrogen gas filling pressures with and without {beta} source at different charging voltages. It is found that the pressure range for the x-ray emission is broadened, x-ray emission is enhanced, and shot to shot reproducibility is improved with the {beta} source. With argon, the Cu K{alpha} emission is estimated to be 27.14 J with an efficiency of 0.7% for {beta} source and 21.5 J with an efficiency of 0.55% without {beta} source. The maximum x-ray yield in 4{pi} geometry is found to be about 68.90 J with an efficiency of 1.8% for {beta} source and 54.58 J with an efficiency of 1.4% without {beta} source. With hydrogen, Cu K{alpha} emission is 11.82 J with an efficiency of 0.32% for {beta} source and 10.07 J with an efficiency of 0.27% without {beta} source. The maximum x-ray yield in 4{pi} geometry is found to be 30.20 J with an efficiency of 0.77% for {beta} source and 25.58 J with an efficiency of 0.6% without {beta} source. The x-ray emission with Pb insert at the anode tip without {beta} source is also investigated and found to be reproducible and significantly high. The maximum x-ray yield is estimated to be 46.6 J in 4{pi} geometry with an efficiency of 1.4% at 23 kV charging voltage. However, degradation of x-ray yield is observed when charging voltage exceeds 23 kV for Pb insert. From pinhole images it is observed that the x-ray emission due to the bombardment of electrons at the anode tip is dominant in both with and without {beta} source.},
doi = {10.1063/1.2162451},
journal = {Review of Scientific Instruments},
number = 1,
volume = 77,
place = {United States},
year = {Sun Jan 15 00:00:00 EST 2006},
month = {Sun Jan 15 00:00:00 EST 2006}
}