Coulomb Excitation ofTc99andSm147

Abstract
Coulomb excitation gamma-ray spectra from Tc99 and Sm147 have been investigated by means of 2-MeV protons. A NaI(Tl) scintillation spectrometer was used to measure the energy and intensity of the gamma rays. Gamma rays of energy 120±3.2 keV and 199±4.1 keV were observed from the excited nucleus Sm147. In the case of Tc99, gamma rays of energy 140±3.5 keV and 178±4.0 keV were observed. Total reduced transition probabilities for these transitions are of the same order of magnitude as the single-particle estimate.