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On alpha particle spectroscopy based on the over-etched track length in PADC (CR-39 detector)
Faculty
Science
Year:
2012
Type of Publication:
Article
Pages:
421-427
Authors:
El Ghazaly, M
DOI:
10.1080/10420150.2012.678009
Journal:
RADIATION EFFECTS AND DEFECTS IN SOLIDS TAYLOR \& FRANCIS LTD
Volume:
167
Research Area:
Nuclear Science \& Technology; Physics
ISSN
ISI:000304425500006
Keywords :
poly allyl diglycol carbonate (CR-39), track-etching rate, over-etched track length, alpha particles spectrometry, monotonic and non-monotonic function
Abstract:
In the current work, alpha particle spectroscopy is investigated experimentally by utilizing the over-etched track lengths in the CR-39 detector. CR-39 samples were exposed perpendicularly to alpha particles emitted from Am-241 with an energy ranging from 0.5 to 5.5MeV. CR-39 samples were etched in 6.25N NaOH at (70 +/- 0.5)degrees C for different durations. The track diameter and track length were measured under an optical microscope. The results show that, the energy-over-etched track length calibration curve is monotonic, in other words, the over-etched track length is a monotonic function in alpha particle energy. On the other hand, the energy-diameter calibration curve is degenerated, i.e. alpha track diameter is non-monotonic function in alpha particle energy. These results suggest that the CR-39 detector could be used as a wide range alpha particles spectrometer using an energy-over-etched track length calibration curve.
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