Radioactive Chemicals, Labelled Compounds and Radiation Sources
نویسندگان
چکیده
منابع مشابه
Standardization of Radioactive Sources
INTRODUCTION Primary standards of radioactivity are in some ways, analogous to fixed points in the temperature scale in that each can be used for comparison with "unknowns" not too far removed from the standard. Over a thousand radioactive species are known to exist, but only a comparatively few satisfy such basic requirements for primary standards as: known decay scheme; appropriate half life ...
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ژورنال
عنوان ژورنال: Nature
سال: 1963
ISSN: 0028-0836,1476-4687
DOI: 10.1038/1991240a0