TL and OSL dosimetric properties of Opal gemstone for gamma radiation dosimetry |
| |
| Institution: | 1. Instituto de Pesquisas Energéticas e Nucleares, Comissão Nacional de Energia Nuclear, IPEN/CNEN-SP, Av. Prof. Lineu Prestes 2242, CEP 05508-000, São Paulo, Brazil;2. Fundacentro, Ministério do Trabalho, MTE, Rua Capote Valente 710, CEP 05422-970, São Paulo, Brazil;3. Instituto de Pesquisa em Ciência dos Materiais, Universidade Federal do Vale do São Francisco, IPCM/ UNIVASF, Av. Antônio Carlos Magalhães 510, CEP 48902-300, Juazeiro, Bahia, Brazil;4. Departamento de Energia Nuclear, Universidade Federal de Pernambuco, DEN/UFPE, Av. Prof. Luiz Freire 1000, CEP 50740-540, Recife, Pernambuco, Brazil;1. Department of Physics, Oklahoma State University, Stillwater, OK 74078, USA;2. National Institute of Standards and Technology, Gaithersburg, MD 20899, USA;1. Department of Physics, GJUS&T, Hisar 125001, India;2. Department of Physics, MD University, Rohtak 124001, India;3. Dr BLK Super Speciality Hospital, New Delhi 110005, India;4. MMH College, Ghaziabad 201001, India;1. Cukurova University, Arts-Sciences Faculty, Physics Department, 01330 Adana, Turkey;2. CIEMAT, Av. Complutense 22, 28040 Madrid, Spain;3. Museo Nacional de Ciencias Naturales, (CSIC), C/José Gutiérrez Abascal 2, 28006 Madrid, Spain |
| |
| Abstract: | In this work, the response of the natural material Opal was studied in relation to its thermoluminescence (TL) and optically stimulated luminescence (OSL), after exposure to the gamma radiation of a 60Co source. The structure of the powdered Opal was verified using the X-ray diffraction, scanning electronic microscopy and energy-dispersive X-ray spectroscopy techniques. The material, in its stone form, was turned into powder and mixed to Teflon (also in powder) in three different concentrations, and then pellets were manufactured. The aim of this work was to evaluate the response of these pellets in high-doses of gamma radiation beams, and to observe their possible application as dosimeters, using the TL and OSL techniques. The dosimetric properties of the samples were analyzed by means of different tests, as: TL emission curves and OSL signal decay curves, reproducibility of TL and OSL response, minimum detectable dose, TL and OSL dose–response curves (5 Gy–10 kGy), and fading. The results obtained in this work, for the TL and OSL phenomena, demonstrated that the pellets of Opal + Teflon present an adequate performance e possibility of use as dosimeters in beams of high-dose gamma radiation. |
| |
| Keywords: | Opal Thermoluminescence Optically stimulated luminescence High-dose dosimetry |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
