Performance of ZnSe(Te) as fiber optic dosimetry detector

M RAMIREZ; P MOLINA; M SANTIAGO; D FELD; E CASELLI

Congreso; 17th International Conference on Solid State Dosimetry; 2013

Fiber optic dosimetry (FOD) is a novel technique for in-vivo real time dose rate assessment in radiotherapy treatments. This technique is based on scintillation materials coupled to the end of fiber optics (FO). During irradiation the scintillator emits light (radioluminescence, RL) with an intensity proportional to the dose rate. One of the problems afflicting this technique is the luminescence generated in the FO by radiation (stem effect). Since the main component of the stem effect is the Cerenkov radiation produced in the fiber, which dominates in the blue/green spectral region, is active the searching for new scintillators that emit in the red region for this application. The present work studies the ZnSe(Te) commercial scintillator RL, which emits in 640 nm, to determine its applicability in FOD.