X-ray and gamma ray intensity measurements in 141Ce and 170Tm decays

Abstract Relative intensities of X-rays and gamma rays in the decays of 141 Ce and 170 Tm were precisely measured using a 28.27 mm 2 × 5.0 m vertical planar high purity Ge (HPGe) detector and a 28.27 mm 2 × 5.5 mm vertical Si(Li) detector. The intensities of the different X-rays measured in the decays of 141 Ce and 170 Tm agree reasonably well with the results calculated using the formulation of Verma and Pal [1] in most of the cases. The measured value of the L β1.3.4 X-ray intensity from 141 Ce is found to differ considerably from the calculated value, which could be due to wrong values of some of the parameters used in the theoretical calculations.