LUMINESCENCE PROPERTIES OF OPRH3W30 LUNAR SIMULANT SAMPLE

Isabela Alves Ferreira; Gabryel Silva Afonso; Neilo Marcos Trindade

Todos os Trabalhos

Trabalho

Título do Trabalho

LUMINESCENCE PROPERTIES OF OPRH3W30 LUNAR SIMULANT SAMPLE

Autores

Isabela Alves Ferreira
Gabryel Silva Afonso
Neilo Marcos Trindade

Modalidade

Resumo

Área temática

Ciência dos Materiais

Data de Publicação

23/01/2026

País da Publicação

Brasil

Idioma da Publicação

pt-BR

Página do Trabalho

https://www.even3.com.br/anais/virtppgctm-571248/1413663-luminescence-properties-of-oprh3w30-lunar-simulant-sample

ISBN

978-65-272-2157-9

Palavras-Chave

OSL, Lunar simulant sample, dosimetry

Resumo

This study focuses on simulant minerals that represent lunar materials, aiming to assess their potential as ionizing radiation detectors. Selected simulant minerals, chosen based on similarities to actual lunar samples, were chemically characterized and subjected to ionizing radiation in laboratory experiments. The elements present in the sample were determined by XRF spectrometry using a Malvern Panalytical XRF spectrometer (model Zetium). To analyze the response of these minerals to radiation, we used optically stimulated luminescence (OSL), a physical phenomenon in which certain materials emit light when illuminated after radiation exposure. OSL measurements were performed using a Risø reader (model DA-20) equipped with a beta source 90S/90Y (dose rate 10mGy/s) for sample irradiation, and a Hoya U-340 filter (thickness 7.5 mm; transmission window 290-370 nm), no mask. OSL emission was stimulated using blue light-emitting diodes (470 nm) delivering 90 mW/cm2 at the sample position in continuous wave (CW-OSL) mode. The samples were irradiated with doses ranging from 0.25 to 5Gy. The XRF results showed that the major elements present in the sample are SiO2 (43.9 %), Al2O3 (27.9 %), CaO (17.9 %), Na2O (2.20 %), and MgO (1.18 %). The characteristics studied were dose-response and repeatability. The dose-response relationship was linear within this dose range under blue light stimulation (R2= 0.999), and the repeatability showed a coefficient of variation of 3%. Acknowledgments: This study was partially funded by the São Paulo Research Foundation (FAPESP), Brazil. Process Numbers: #2025/00094-2, #2024/14975-8, #2018/05982–0, #2019/05915-3, #2024/03006-4. N. M. Trindade acknowledges CNPq (#409338/2021-4, #306929/2022-8). The authors also thank the National Aeronautics and Space Administration (NASA) and the Simulant Development Lab (SDL) of the Astromaterials Research and Exploration Science Division (ARES).

Título do Evento: 6ª Reunião Técnica do Programa de Pós-graduação em Ciência e Tecnologia de Materiais
Cidade do Evento: Presidente Prudente
Título dos Anais do Evento: Anais da 6ª Reunião Técnica do Programa de Pós-graduação em Ciência e Tecnologia de Materiais
Nome da Editora: Even3
Meio de Divulgação: Meio Digital

Como citar

FERREIRA, Isabela Alves; AFONSO, Gabryel Silva; TRINDADE, Neilo Marcos. LUMINESCENCE PROPERTIES OF OPRH3W30 LUNAR SIMULANT SAMPLE.. In: Anais da 6ª Reunião Técnica do Programa de Pós-graduação em Ciência e Tecnologia de Materiais. Anais...Presidente Prudente(SP) UNESP, 2025. Disponível em: https//www.even3.com.br/anais/virtppgctm-571248/1413663-LUMINESCENCE-PROPERTIES-OF-OPRH3W30-LUNAR-SIMULANT-SAMPLE. Acesso em: 18/02/2026