INVESTIGADORES
MOLINA Pablo Fernando
congresos y reuniones científicas
Título:
Radioluminescence of red-emitting Eu-doped phosphors for fiberoptic dosimetry
Autor/es:
P MOLINA; M SANTIAGO; J MARCAZZÓ; F SPANO; E CASELLI
Lugar:
Ciudad de México
Reunión:
Congreso; XII INTERNATIONAL SYMPOSIUM XXII NATIONAL CONGRESS ON SOLID STATE DOSIMETRY; 2011
Resumen:
The fiber optic dosimetry technique (FOD) has become an attractive method for invivo realtime dosimetry
in radiotherapy. It is based on the use of a tiny piece of scintillator coupled to the end of an optical fiber,
which collects the light emitted by the scintillator during irradiation (radioluminescence, RL). Carbon-doped
aluminum oxide (Al2O3:C) is one of the most used RL materials for FOD due to its high efficiency but it
presents the drawback of emitting in the spectral region, where spurious luminescence is also important
(Andersen et al., 2010). Spurious luminescence from optical fiber, termed stem effect, is the main problem
afflicting FOD. Several techniques have been applied to remove the stem effect. Optical filtering, which
consists in using longpass filters, is the simplest one. This technique is useful when red-emitting scintillators
are employed. In this work, the feasibility of using red-emitting Eu-doped phosphors as FOD scintillators has
been investigated.