Activity determination and nuclear decay data of 113mCd

Kossert, K., Nähle, O., Warwick, P.E., Wershofen, H. and Croudace, I.W. (2011) Activity determination and nuclear decay data of 113mCd. Applied Radiation and Isotopes, 69 (2), 500-505. (doi:10.1016/j.apradiso.2010.10.006).

Abstract

The radionuclide 113mCd was extracted from a Cd component, which has been irradiated in a research reactor during its routine operation. A validated separation procedure was then used to obtain a 113mCd solution of high radiochemical purity. The solution was measured by means of liquid scintillation counting for activity determination. To this end, the CIEMAT/NIST efficiency tracing method as well as the triple-to-double coincidence (TDCR) counting technique were used. Measurements in a low-background gamma-ray spectrometer were applied to identify any potential photon-emitting impurities and to measure the 263.7 keV photons from the isomer transition. A gamma emission probability of 0.01839(29)% was determined for this line. The liquid scintillation measurements were also used to evaluate the half-life of 113mCd. The decay was followed for about 11 months and a half-life T1/2=13.97(13) years was obtained.

This record has no associated files available for download.

Contributors

Author: P.E. Warwick

Download statistics