EPJ Web Conf.
Volume 146, 2017ND 2016: International Conference on Nuclear Data for Science and Technology
|Number of page(s)||5|
|Section||Nuclear Masses, Structure and Decay Data Measurements|
|Published online||13 September 2017|
Absolute intensities of the γ-ray emissions originating from the electron capture decay of 153Gd
1 National Physical Laboratory, Hampton Road, Teddington, Middlesex TW11 0LW, UK
2 Department of Physics, University of Surrey, Guildford GU2 7XH, UK
3 Grenoble Institute of Technology, 38016 Grenoble Cedex 1, France
a e-mail: Robert.firstname.lastname@example.org
Published online: 13 September 2017
153Gd has widespread use, in non-destructive testing, as a line source in SPECT imaging and has been recently proposed as an in-vitro interstitial rotating shield brachytherapy (I-RSBT) source. In this work, the six most intense emissions in the de-excitation of the daughter nucleus 153Eu have been measured, with an improved accuracy and precision to γ-ray emission intensities reported previously, via two characterised HPGe spectrometers. A specific absolute activity of 512.5 (25) kBq g−1 was determined using the 4π (LS)-γ digital coincidence counting technique. This absolute activity was used to determine an absolute intensity for the 97.4 keV γ-ray emission of 30.15 (20) per 100 decays. The reported absolute emission intensity of this transition in this work has a relative difference of 4% from the currently recommended value.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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