Decay of Samarium-153

Joshi, M. C. ; Subbarao, B. N. ; Thosar, B. V. (1957) Decay of Samarium-153 Proceedings of the Indian Academy of Sciences - Mathematical Sciences, 45 (6). pp. 390-401. ISSN 0253-4142

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Radiations emitted in the decay of Samarium-153 have been studied in the Siegbahn-Slatis beta-ray spectrometer. Using the internal conversion electron spectrum and the photo-electron spectrum with tin as radiator, the internal conversion coefficient αk has been determined for 102 Kev. and 70 Kev.gamma-rays. The relative intensities of the three beta-ray branches have been determined. A weak gamma-ray of energy 83 Kev. has been found and can be interpreted as a transition to the ground state from the first rotational level in Europium-153. The multipole order and character of the 102 Kev. transition is discussed.

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