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  • Title: Photon emission probabilities of 176Lu.
    Author: Ott O, Kossert K, Sima O.
    Journal: Appl Radiat Isot; 2012 Sep; 70(9):1886-91. PubMed ID: 22445711.
    Abstract:
    An aqueous solution containing dissolved lutetium nitrate with a natural isotopic composition was measured by means of gamma-ray spectrometry to determine emission probabilities of photons which are emitted as a consequence of the decay of the primordial isotope (176)Lu. The geometry and matrix of the sample were taken into account in terms of efficiency transfer factors computed with the aid of the upgraded Monte Carlo simulation software GESPECOR. A combination of these results, with the activity determination via liquid scintillation counting using the CIEMAT/NIST efficiency tracing method, yields absolute values of P(X)(54.61 keV)=0.095(4), P(X)(55.79 keV)=0.168(5), P(γ)(88.36 keV)=0.149(5), P(γ)(201.83 keV)=0.777(9) and P(γ)(306.84 keV)=0.929(9). In addition, the upper limit of the probability for a potential electron-capture decay of (176)Lu was improved using additional high resolution gamma-ray spectra taken with a planar HPGe detector.
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