Silva, Ronaldo Lins da; Almeida, Maria Candida Moreira de; Delgado, José Ubiratan; Poledna, Roberto; Santos, A.; Veras, E. V.; Rangel, J.; Trindade, O. L.
(2015)
The National Laboratory for Metrology of Ionizing Radiation provides gamma sources of radionuclide and standardized in activity with reduced uncertainties. Relative methods require standards to determine the sample activity ...