Beta radiation induced luminescence of polycrystalline Cu-doped Li2B4O7
- Cruz Zaragoza, Epifanio
- Furetta, C.
- Marcazzo, Salvador Julian
- Santiago, Martin Alejo
- Guarneros, C.
- Pacio, M.
- Palomino, R.
DOIAbstract
Thermoluminescence (TL) and radioluminescence (RL) properties of polycrystalline lithium tetraborate (Li2B4O7) doped with different concentrations of copper (0.25, 0.5, 1 wt %) under beta irradiation have been investigated. The feasibility of using this borate in radiation dosimetry at low doses has been evaluated. Tissue equivalent Li2B4O7 was prepared by solid state reaction using mixing stoichiometric compositions of lithium carbonate (Li2CO3) and boric acid (H3BO3) and a solution of CuCl2 as dopant. The glow curve of the most efficient copper doped borate (Li2B4O7:Cu 0.5 wt %) shows a main stable peak centered at 225 °C and a second low temperature peak centered at 80 °C. The low temperature peak fades completely after 24 h of storage i...
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