| Full text | |
| Author(s): |
Silva, A. O.
;
Kunzel, R.
;
Yoshimura, E. M.
;
Pires, K. C. C.
;
Trindade, N. M.
Total Authors: 5
|
| Document type: | Journal article |
| Source: | Journal of Luminescence; v. 271, p. 6-pg., 2024-04-10. |
| Abstract | |
This paper reports for the first time the study of optically stimulated luminescence (OSL) of amorphous Brazilian bisphenol-A polycarbonate (Durolon) exposed to beta radiation. The OSL was studied from two perspectives: characterizing the luminescent signal as a function of radiation dose and examining repeatability. Computational analyses are applied to OSL curves via the deconvolution method. Fluorescence measurements employing the emission - excitation matrix (EEM) technique and optical absorption (OA) are incorporated to characterize the polymer defects and color centers. OSL measurements were carried out in a commercial reader Ris & oslash; (model DA20) coupled with a90Sr/90Y beta source. The sample was illuminated using 470 nm blue LEDs. The OSL response exhibited an exponential decay signal after 1 Gy, with linear dose-response and consistent repeatability. The continuous-wave-OSL curve was well adjusted with two distinct components. As result, Durolon promising potential as a luminescent dosimeter, supported by its desirable OSL signal characteristics. (AU) | |
| FAPESP's process: | 20/15626-6 - Study of the optical and thermoluminescent properties of Brazilian alexandrites |
| Grantee: | Alexia Oliveira Silva |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |
| FAPESP's process: | 19/05915-3 - Characterization of minerals for luminescent dosimetry of ionizing radiations |
| Grantee: | Neilo Marcos Trindade |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 18/05982-0 - R&D&I in radiation metrology in the health area |
| Grantee: | Linda Viola Ehlin Caldas |
| Support Opportunities: | Research Projects - Thematic Grants |