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Internal Absorption of y-rays

1929; Nature Portfolio; Volume: 123; Issue: 3102 Linguagem: Inglês

10.1038/123568a0

1476-4687

James A. Gray, A. J. O'LEARY,

Advanced X-ray Imaging Techniques

FOUR years ago (NATURE, 115, 13, 86; 1925), one of us estimated the internal absorption of the y-rays of radium-D and the fraction of the atoms emitting y-rays. Due to an oversight and, in the latter case, an arithmetical error, both estimations are incorrect. They have recently been re-calculated in the following manner.