Radiations from selenium 75

Date
1953-04-01
Authors
Jensen, Erling
Laslett, L.
Martin, Don
Hughes, Francis
Pratt, William
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Ames Laboratory
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Abstract

The radiations from 125 day Se-75 have been examined by means of a thin lens spectrometer and absorption-coincidence techniques. Se-75 was found to decay to As-75 by orbital electron capture. The energies of ten transitions (0.0666, 0.0766, 0.0983, 0.1241, 0.1384, 0.2032, 0.2688, 0.2814, 0.3078, and0.4050 Mev) were observed in the photoelectron and internal conversion spectra determined with the spectrometer. A decay scheme is proposed on the basis of the absorption-coincidence and spectrometer data. The multiple order of the 98.3 kev transition is discussed.

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Atomic Research, Physics, Chemistry, Brookhaven National Laboratory
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