Alpha-particle emission probabilities in the decay of 243Am
The nuclide 243Am is used as a tracer for 241Am and Cm measurements by alpha-particle spectrometry. Disagreements between the P(alpha) of the two major emissions and the corresponding gamma-ray depopulation data were reported. These could not be resolved because of the internal conversion of the 43.53 keV and 74.67 keV gamma emissions. Since few direct measurements of P(alpha) of 243Am have been reported, new measurements were taken. Using a very pure 243Am material which contained only about 0.22% of 241Am by activity, a number of sources were produced by sublimation in vacuum. Measurements and analyses were carried out at two laboratories. P(alpha) data for this nuclide were obtained, taking into account corrections for coincidence summing between alpha particles and conversion electrons.
Bibliographic Reference: Paper presented: International Symposium on Radionuclide Metrology and its Applications, Madrid (ES), May 27-31, 1991
Availability: Available from (1) as Paper EN 36018 ORA
Record Number: 199110862 / Last updated on: 1994-12-02
Original language: en
Available languages: en