Measurements of the optical density and the thermoluminescent response of LiF:Mg,Ti exposed to high doses of 60Co gamma rays

Radiation Protection Dosimetry
C Montaño-García, I Gamboa-deBuen

Abstract

The absorption spectra and glow curves of LiF:Mg,Ti exposed to high doses of 60Co gamma rays as well as the optical density curves and thermoluminescent (TL) response as a function of dose were measured. Absorption peaks around 442 nm (2.8 eV), 307 nm (4.0 eV) and 248 nm (5.0 eV) were observed. The optical density is a linear function of dose up to 2500 Gy and then sublinear for the 5.0 eV band, and for the 4.0 eV band it is sublinear with a filling constant of 2.1 x 10(-4) and 6.2 x 10(-4) Gy(-1). The dose response of the 2.8 eV band is linear from 2500 Gy to 10 kGy with a slope of 1.0 x 10(-5) Gy(-1). Once the absorption spectra were obtained, the glow curves and the TL response were obtained. In the dose range, 290-10,000 Gy, the TL response of peaks 5 and 7 was supralinear-sublinear.

References

Sep 2, 1998·Physics in Medicine and Biology·I Gamboa-deBuenM E Brandan
Apr 29, 2006·Radiation Protection Dosimetry·I NailN Ipe

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Citations

Jun 12, 2014·Radiation Protection Dosimetry·A LavonY S Horowitz
Feb 7, 2020·Physics in Medicine and Biology·Neslihan SarigulBulent Aydogan

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