ABSORPTION CORRECTIONS FOR RADIUM STANDARDIZATION

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Abstract
The absorption corrections necessary for radium standardization have been redetermined. The measuring equipment and technique have been investigated to find the conditions necessary for minimum error. A lead filtered, aluminum walled chamber was found to have the best characteristics. The electronic absorption coefficients measured with this chamber fit an empirical formula depending only on the atomic number. This formula gives a value for the absorption coefficient of radium salts which was compared with a direct experimental value.

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