Title: Intensities of Gamma Rays from the Calibration Source<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Co</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>56</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>
Abstract: The intensities and energies of $\ensuremath{\gamma}$ rays from 77.3-day $^{56}\mathrm{Co}$ are especially useful for calibration of Ge(Li) detectors in the range 0.8-3.5 MeV. We have reexamined the $^{56}\mathrm{Co}$ $\ensuremath{\gamma}$-ray spectrum using a Ge(Li)-NaI (Tl) coincidence-anticoincidence spectrometer. This study revealed five previously unreported $\ensuremath{\gamma}$ rays with energies of 896, 1140.2, 1336, 1443.2, and 1461.9 keV, all of which could be assigned to transitions from levels already established in the $^{56}\mathrm{Co}$ decay. Other weak $\ensuremath{\gamma}$ rays with energies of 2276.1, 2374.2, 2522.6, 3599.2, and 3612.5 keV have been confirmed and their intensities have been determined more accurately. A summary of the latest available data for the $^{56}\mathrm{Co}$ decay is presented in the form of weighted averages for $\ensuremath{\gamma}$-ray energies and intensities and an improved decay scheme.
Publication Year: 1969
Publication Date: 1969-08-20
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 33
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