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BIBTEX RIS

The thermoluminescent properties of Brazilian topaz

1986; Pergamon Press; Volume: 37; Issue: 2 Linguagem: Inglês

10.1016/0883-2889(86)90061-4

ISSN

1878-1128

Autores

Cássio Lima, L.A.R. da Rosa, P.G. Cunha,

Tópico(s)

Mineralogy and Gemology Studies

Resumo

The TL properties of Brazilian topaz were investigated. The glow curve up to 573 K presents peaks close to 373, 403, 473 and 523 K. A linear response from 7 to at least 104 mGy is observed. The TL sensitivity is about 150 times lower than that of LiF—TL 100 Harshaw. The fading behaviour was investigated during a period of 15 days, at room temperature. The third peak intensity, after 24 h, becomes 80% of its initial value and then seems to stabilize.

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