FABIO HENRIQUE GROSSI
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Artigo IPEN-doc 08723 Aplicacao da termoluminescencia fotoestimulada na area oftalmologica usando-se CaSOsub(4):Dy2002 - GROSSI, F.H.; CAMPOS, L.L.; SCHOR, P.; MELO JUNIOR, L.A.S.Artigo IPEN-doc 11190 PTTL method applied to UV radiation detection during refractive surgery using excimer laser2005 - GROSSI, F.H.; MELO JUNIOR, L.A.S.; SCHOR, P.; CAMPOS, L.L.The method of phototransferred thermoluminescence (PTTL), using CaSO4:Dy pellets produced at IPEN as sensitive material, was used to detect the spread laser radiation inside the surgery room during refractive surgical procedures using ArF excimer lasers. The purpose of this work was to study the viability of performing the ultraviolet radiation (UVR) exposure detection of patients and the hospitalās surgical staff during a refractive surgery. The CaSO4:Dy pellets were positioned at different distances from the laser source inside the surgery room: patientās ( ā 0.15 m), surgeonās ( ā 0.5 m) and nurseās ( ā 1.0 m) foreheads, lateral ( ā 1.5 m) and back ( ā 4.0 m) walls. The measurements of PTTL were carried out at two different conditions: five surgeries, each one taking ~ 10 min, and during a period of 4 h (cumulative), when several operations were performed. The detectors positioned as far as 4.0 m from the UV laser source were sensitised, making the UVR detection feasible at large sourceādetector distances. The absorbed energy was detected in the range from 40 Ī¼J to 30 mJ during a surgery. This result indicates that the method studied can be used to detect the spread UVR.Artigo IPEN-doc 08587 Studies of UV induced phototransferred thermoluminescence in CaSOsub(4):Dy pellets2002 - GROSSI, F.H.; CAMPOS, L.L.