A first look at phototransferred thermoluminescence of rose quartz

Author(s)

Ferreira, I. A. ; Nunes, M. C. S. ; Yoshimura, E. M. ; Trindade, N. M. ; Chithambo, M. L.

• Document type: Journal article
• Source: Radiation Measurements; v. 174, p. 6-pg., 2024-05-02.

Abstract

We report a preliminary study of phototransferred thermoluminescence (PTTL) induced by 470 nm light source in rose quartz. The glow curve corresponding to 1 Gy consists of five peaks at 76, 115, 180, 290 and 423 degrees C labelled I through V in that order. In the PTTL experiments employing blue light. PTTL was regenerated at peak I following preheating to remove peak I only and at peaks I and II otherwise. The dependence of the PTTL intensity on duration of illumination is analyzed in terms of a system of one acceptor and two donors in both cases. The mechanisms for the PTTL phenomena in the rose quartz are comprehensively discussed in this paper. (AU)

• FAPESP's process: 22/14925-5 - Time-resolved optically stimulated luminescence in rose quartz
• Grantee: Isabela Alves Ferreira
• 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
• FAPESP's process: 21/05042-0 - Characterization of the optical and thermoluminescent properties of quartz from the south of Minas de Gerais (Brazil)
• Grantee: Isabela Alves Ferreira
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 22/14516-8 - Study of mechanisms of luminescence in alexandrite pellets using optically stimulated luminescence
• Grantee: Matheus Cavalcanti dos Santos Nunes
• Support Opportunities: Scholarships abroad - Research Internship - Master's degree
• 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: 21/12758-1 - Development and characterization of an optically stimulated luminescent detector based on natural Brazilian alexandrite
• Grantee: Matheus Cavalcanti dos Santos Nunes
• Support Opportunities: Scholarships in Brazil - Master