IT is known that 2.5-sec indium-116mm (ref. l) is formed by neutron irradiation of natural indium and that it emits 0.15-MeV γ-ray. The size of the photopeak due to this γ-ray, obtained immediately after irradiation, can be estimated by the use of the data presented in a γ-ray spectra catalogue2. The peak size per 1 µg of indium is as large as that of silver when they are irradiated respectively for a period equal to the half-life of the nuclide formed, that is, 2.5 sec for indium and 24 sec for silver. Since silver is the most sensitive3,4 in γ-ray counting after neutron irradiation, it is deduced that indium is also very sensitive.
Stehn, J. F., Nucleonics, 18, No. 11, 186 (1960).
Okada, M., Nucleonics, 19, No. 9, 79 (1961).
Okada, M., Nippon Kagaku Zasshi, 81, 1422 (1960).
Meinke, W. W., U.S. Atomic Energy Comm. Rep. TID-11009, 75 (1960).
Okada, M., Nature, 188, 52 (1960).
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OKADA, M., KAMEMOTO, Y. Rapid Microdetermination of Indium by Neutron Activation. Nature 197, 279 (1963). https://doi.org/10.1038/197279a0
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