Abstract
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.
References
- 1
Stehn, J. F., Nucleonics, 18, No. 11, 186 (1960).
- 2
Okada, M., Nucleonics, 19, No. 9, 79 (1961).
- 3
Okada, M., Nippon Kagaku Zasshi, 81, 1422 (1960).
- 4
Meinke, W. W., U.S. Atomic Energy Comm. Rep. TID-11009, 75 (1960).
- 5
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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Further reading
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The radioanalytical bibliography of Japan (1936–1978)
Journal of Radioanalytical Chemistry (1982)
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Neutron activation analysis of traces in electrolytic zinc sulphate solution
Analytica Chimica Acta (1969)
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Zerstörungsfreie aktivierungsanalytische Bestimmung von Mikro- und Ultramikromengen Indium in Reinstthallium und Thalliumverbindungen
Fresenius' Zeitschrift für analytische Chemie (1968)
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