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Effect of Alpha-Particle Energies on CR-39 Line-Shape Parameters using Positron Annihilation Technique

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Author(s): Abdel-Rahman M. A. | Abdel-Rahman M. | Abo-Elsoud M. | Eissa M. F. | Lotfy Y. A. | Badawi E. A.

Journal: Progress in Physics
ISSN 1555-5534

Volume: 3;
Start page: 66;
Date: 2006;
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Keywords: CR-39 polycarbonate | 241-Am irradiation doses and energies | Doppler broadening Positron annihilation technique

ABSTRACT
Polyally diglycol carbonate "CR-39" is widely used as etched track type particle detector. Doppler broadening positron annihilation (DBPAT) provides direct information about core and valance electrons in (CR-39) due to radiation effects. It provides a non-destructive and non-interfering probe having a detecting efficiency. This paper reports the effect of irradiation alpha-particle intensity emitted from 241-Am (5.486 MeV) source on the line shape S- and W-parameters for CR-39 samples. Modification of the CR-39 samples due to irradiation were studied using X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques.
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