Abstract
Positron annihilation lifetime has been utilized for the first time to investigate the free - volume hole properties in thermolumenscent dosimeter ( TLD ) as a function of gamma-dosc . The hole volume, free volume fraction determined form orthopsitronium lifetime are found to be ?lamatically increase to large values , and then to minimum values as a function ofgamma-dose . The free - volume holes size is found to be 0.163nm’ and to have maximum of 0.166nm^ at the gamma-dose of 0.1 and 0.8 Gy, respectively-
Article Type
Article
How to Cite this Article
AL-Bayati, A.A.
(2004)
"Positron Annihilation Lifetime Study on free Volume Changes in TLD by Gamma - irradiation,"
Baghdad Science Journal: Vol. 1:
Iss.
1, Article 22.
COinS
