Study of the luminescent properties of KMgF3:Sm

J. MARCAZZÓ; M. SANTIAGO; C. D´ANGELO; C. FURETTA; E. CASELLI

NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH B - BEAM INTERACTIONS WITH MATERIALS AND ATOMS

Elsevier B.V.

Lugar: Kidlington, United Kingdom; Año: 2010 vol. 268 p. 183 - 186

0168-583X

The photoluminescence (PL), radioluminescence (RL) and thermoluminescence(TL) of KMgF3 doped at several Sm concentrations have been investigated. The maximum TL and RL yield under beta irradiation has been observed in KMgF3:Sm 0.02 mol%. The glow curve of this doped perovskite is made up of at least ve peaks located at 95, 120, 160, 270, and 330oC. The third peak appears to be the most convenient for personal or environmental dosimetry, since it shows no fading and good linearity within the investigated dose range (0.02-200 Gy). From the RL and PL spectra it has been found that most of KMgF3:Sm emission is located at wavelengths higher than 650 nm. This emission, which is character