Measurement of isomeric yield ratios of Rh-99m,Rh-g;101m,Rh-g;102m,Rh-g in the (nat)pd(gamma, pxn) reactions with the bremsstrahlung end-point energies of 50-70 MeV

Abstract

The isomeric yield ratios of Rh-99m,Rh-g, Rh-101m,Rh-gg, and Rh-102m,Rh-g isomeric pairs produced from the (nat)pd(gamma,pxn) reactions were measured with the bremsstrahlung end-point energies of 50-, 55-, 60-, 65-, and 70-MeV at the 100 MeV electron linac of the Pohang Accelerator Laboratory, Korea. The measurements were carried out with the activation method in combination with off-line gamma-ray spectrometry. In order to improve the accuracy of the activity measurements, the separation of the overlapping gamma-rays and the necessary corrections for the counting losses were made. The new experimental results are compared with the theoretical values of the TALYS-1.6 code.