Abstract
The gamma-ray emission probability per decay for the 1266-keV transition of 31Si has been measured. This radionuclide was obtained by means of the 31P(n,p) 31Si reaction in a fast neutron flux at the IPEN 2 MW research reactor. The sample activity has been measured by the 4πβ-γ coincidence method and the efficiency tracing technique was applied using 24Na as the tracer. The gamma-ray counting has been performed in a calibrated HPGe spectrometer. The resulting emission probability per decay obtained for 31Si was 5.537 × 10 −4 with an overall error of 1.21% (one standard deviation).
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