A preliminary study of phototransferred thermoluminescence of alexandrite

Author(s)

Silva, A. O. ; Trindade, N. M. ; Chithambo, M. L.

• Document type: Journal article
• Source: Journal of Luminescence; v. 276, p. 6-pg., 2024-08-17.

Abstract

This study reports the phototransferred thermoluminescence (PTTL) of alexandrite. PTTL was induced by 470 nm illumination of samples beta irradiated to 150 Gy. The glow curve of its conventional TL shows five peaks, labelled as I-V. PTTL is observed at peaks I-IV. Time-response profiles of PTTL were analyzed as systems of an acceptor and donors with the number of donors determined by the preheating temperature. The attendant effect of thermal assistance and thermal quenching associated with the optically stimulated luminescence emitted during illumination of sample are reported and analyzed. (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: 23/04955-7 - Investigation of phototransferred thermoluminescence in Alexandrite pellets
• Grantee: Alexia Oliveira Silva
• Support Opportunities: Scholarships abroad - Research Internship - Scientific Initiation
• 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