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Positron Annihilation Line Shape Parameters for CR-39 irradiated by Different Alpha-Particle Doses

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

Journal: Progress in Physics
ISSN 1555-5534

Volume: 3;
Start page: 91;
Date: 2006;
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Keywords: CR-39 polycarbonate | alpha-particle irradiation doses | Doppler broadening Positron annihilation technique

Doppler broadening positron annihilation technique (DBPAT) provides direct information about the change of core and valance electrons in Polyallyl diglycol carbonate (CR-39). It is widely used as etched track type particle detector. This work aims to study the variation of line-shape parameters (S- and W-parameters) with different alpha-particle doses of Am-241 (5.486 MeV) on CR-39 samples at different energies. The relation between both line-shape parameters was also reported. The behavior of the line-shape S-and W-parameters can be related to the different phases.
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