Radioluminescence of rare-earth doped potassium yttrium fluorides crystals

P MOLINA; M SANTIAGO; J MARCAZZÓ; F SPANO; N KHAIDUKOV; E CASELLI

Sydney

Congreso; 16th International Conference on Solid State Dosimetry; 2010

Highly accurate radiotherapy techniques need the development of dosimetry systems suitable for in-vivo, real time dose assessment (Beddar 2007). The well established fiberoptic dosimetry (FOD) technique relying on the use of Al2O3:C scintallators fulfils most of these requirements nowadays. One of the problems afflicting Al2O3:C is that its spectral emission matches that of spurious Cherenkov emission (stem effect). Although this problem has been met in linear accelerators by resorting to a temporal separation technique (Andersen et al. 2006) there is a permanent interest in developing new luminescent materials emitting at longer wavelengths than the stem effect (Marcazzó et al. 2007, Molina et al. 2010). In this work the RL efficiency of different doped potassium fluorides is investigated in order to assess their possible use in the framework of the FOD technique.