Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10732073 | Radiation Physics and Chemistry | 2011 | 6 Pages |
Abstract
Positronium (Ps) formation in high-density polyethylene (HDPE) has been studied below the glass transition temperature. The formation probability increases with positron irradiation time due to an increasing number of inter-track trapped electrons becoming available for positron capture. The temperature variation of the saturated Ps level is discussed in different models. The quenching of trapped electrons by light has been studied and the optical de-trapping cross-section for different photon energies has been estimated over the visible region.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
F. Nahid, J.D. Zhang, T.F. Yu, C.C. Ling, S. Fung, C.D. Beling,