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Study of the Radioactivity of Hokutolite
Author(s) -
Hamaguchi Hiroshi,
Lee YuanTseh,
Cheng HwaSheng
Publication year - 1962
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.196200001
Subject(s) - chemistry , nuclide , series (stratigraphy) , radiochemistry , bismuth , polonium , radionuclide , nuclear physics , geology , paleontology , physics , organic chemistry
Radioactive equilibria in the hot spring sediment, Hokutolite, were studied, There were carried out the determination of the activity ratio of U‐series to Th‐series, and the accurate determination of the contents of the U‐series and Th‐series by absolute counting of β‐rays by using constant geometry method. The following nuclides were detected: Pb 210 and Pb 212 in the lead‐portion, Br 210 and Bi 212 in the bismuth‐portion, Ac 28 in the hydroxide‐portion. it was shown that the radioactive series in Hokutolite starts from Ra and the activity ratio of U‐series to Th‐series is close to 4. The Ra‐content of the Hokutolite was estimated as 1.5× 10 ∼11 g/g.