Measurement of<i>K</i>-shell photoelectric cross sections by the indirect method

Abstract

K-shell photoelectric cross sections are measured by the indirect method in Tb, Ho, Er, and Pt at 84.26 keV. A high-resolution, hyperpure germanium detector and a good-geometry setup are used to conduct a transmission experiment. The superiority of the indirect method over the direct method at low energies is discussed. The results are compared with available theoretical and other experimental values and are in good agreement. The results show a close agreement with the recent and accurate calculations of Scofield.