Abstract
INDIUM has two stable isotopes, In115 (95·5 per cent) and In113 (4·5 per cent). In115 can be excited by an (n,n) process to a metastable-level (In115*) at 340 keV. and returns to the ground-state by a strongly internally converted γ-transition with a half-life of 4½ hours1. Fast neutrons may also be captured in In115, leading to two isomeric activities of In116 with periods of 54 min. and 13 sec. Both these processes may be regarded as competing in the initially highly excited compound nucleus In116, and it was considered of interest to examine the absolute magnitude of the respective cross-sections as a function of neutron energy.
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COHEN, S. Interaction of Fast Neutrons with Indium. Nature 161, 475–476 (1948). https://doi.org/10.1038/161475a0
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DOI: https://doi.org/10.1038/161475a0
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