SISTEMA DE BLINDAJE BICAPA PARA UNA FUENTE DE NEUTRONES DE CALIFORNIO-252
TWO LAYERED SHIELDING SYSTEM FOR A CALIFORNIUM-252 NEUTRON SOURCE
Keywords:
Blindaje para de neutrones, sección eficaz, Californio-252 (252Cf), rata de dosis equivalente (es)Neutron shielding, Removal cross section, Californium-252(252Cf), Dose equivalent rate. (en)
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Una aproximación teórica fue utilizada para calcular una película de parafina utilizada para moderar neutrones de una fuente de Californio-252 (Cf-252) y una película posterior de plomo que sirve de blindaje a los rayos gammas producidos en la parafina. Los materiales son evaluados en términos del poder moderador, la habilidad de absorbción, limitaciones de costo y disponibilidad del material. Los resultados muestran que una combinación de un espesor de 45.7cm de parafina con 7.05 cm de plomo permite satisfacerlos requerimientos de seguridad para el límite de dosis por fuera del blindaje.
A theoretical approach was used to calculate an inside layer of paraffin to moderate neutrons generated by a 20 MBq Californium-252 (Cf-252) source and subsequently an outside layer of lead to shield the gammas being produced in the paraffin. Materials are evaluated in terms of moderating power, absorbing ability, cost limitation and material availability. The results showed that the combination of thickness of 45.7 cm of paraffin with 7.05 cm of lead permits the meet the safety requirement to the planned dose limit outside of shielding.
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