Calibration of CR-39 regarding the Track Diameter Using the Spontaneous Fission Spectrum of Cf252

Bakht Yar Akhtar


The aim of this study was to calibrate the Solid State Nuclear Track Detector (SSNTD), CR-39 for the identification of spontaneous fission produced from the Cf252. The calibration of detectors was carried out with Solid State Surface Barrier Detector and the Radio Chemical Technique. A number of CR-39 detectors were exposed to the fission fragments of Cf252 in vacuum at 45o and 90o. The detectors were etched in 6N NAOH at 40o C to reveal the tracks of spontaneous fission. The etched tracks recorded by CR-39 were scanned using the optical microscope at the magnification of 40x (Leitz-orthoplan). The actual diameters of the tracks were measured using the projected lengths and depths. The graphs of the lengths and diameters were drawn as a function of % yield from the obtained data. Now this data was correlated with the results obtained by Shmitt. He used a solid state surface barrier detector. Our detectors provide us an offline technique. The calibration curve between the track diameters vs the ffs energies was drawn. It was observed that the accuracy in measuring the masses and energies of the ffs is preserved in our case.

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ISSN (Paper)2224-719X ISSN (Online)2225-0638

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