Beta ray induced optically stimulated luminescence properties of calcium oxide phosphor

Autor(es)

Nagabhushana, K. R. ; Prakash, D. ; Tatumi, Sonia H. ; Rocca, Rene R. ; Watanabe, S.

• Tipo de documento: Artigo Científico
• Fonte: INDIAN JOURNAL OF PURE & APPLIED PHYSICS; v. 56, n. 8, p. 4-pg., 2018-08-01.

Resumo

This work presents the results on optically stimulated luminescence of calcium oxide (CaO). Polycrystalline CaO phosphors are irradiated with beta rays in the dose range 10 - 100 Gy. The optically stimulated luminescence (OSL) from CaO sample is strong, the decay is fast and entire signal decays within 50 s. OSL intensity increases linearly with beta dose. The life time and photo ionization cross section (PICS) of decay are in the range similar to 0.045, 1.5 and 41.391 s and 1.32x10(-16), 3.32x10(-18) and 1.42x10(-19) cm(2) for fast, medium and slow components, respectively. Further, the life time and PICS of fast, medium and slow LM-OSL components have been found to be 2.29, 6.0, 17.0 s and 2.56x10(-18), 9.77x10(-19), 3.45x10(-19) cm(2), respectively. Both the OSL curves exhibits general order kinetics. (AU)

• Processo FAPESP: 16/02262-0 - Datação e dosimetria de sítios geológicos por TL e LOE
• Beneficiário: Sonia Hatsue Tatumi
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Internacional