Characterization of the InSTEC’s low-background gamma spectrometer for environmental radioactivity studies

ABSTRACT The capabilities of the LowBackground Gamma Spectrometer (LBGS) at InSTEC were studied for environmental purposes. Fifty three glines were identified in the LBGS background spectrum. The Minimum Detectable Activity for , , , , and were calculated using the detector’s volumetric efficiency simulated by Monte Carlo method. Validation was performed by absolute and relative analysis of radionuclide activities present in a marine sediment certified material.(AU) RESUMEN Se determinan las potencialidades del Espectrometro Gamma de Bajo Fondo del InSTEC con fines ambientales. Se identificaron 53 lineas gamma en el espectro de fondo natural del espectrometro. Se calculan las actividades minimas detectables para los radionucleidos , , , , and empleando la eficiencia volumetrica del detector simulada por Monte Carlo. Como validacion se determinan, por via absoluta y relativa, las actividades de los radionucleidos presentes en un estandar de sedimento marino.(AU)