Dosimetric properties of RbCdF3:Mn2+RbCdF3:Mn2+

Single crystals of the cubic fluoroperovskite RbCdF3RbCdF3 doped with different concentrations of Mn2+Mn2+ were investigated as potential dosimetric materials for which the dose information can be read via optically stimulated luminescence (OSL) or thermoluminescence (TL). X-ray, Am241 and Cs137γγ-ray irradiation as well as UV excitation below 280 nm induced broad absorption bands centered around 300 nm, that are most likely attributable to F-centers. These bands grow linearly over at least 6 orders of magnitude with radiation dose. They can be optically bleached with light of the same wavelength yielding OSL emission from a spin and parity forbidden Mn2+Mn2+ excited state to ground state transition. TL measurements up to 420 °C show at least 4 glow peaks with the same Mn2+Mn2+ emission as the OSL, which can be excited by X-ray, γγ and UV irradiation.