The two-step gamma cascade method as a tool for studying photon strength functions of intermediate-weight and heavy nuclei

The method of two-step gamma cascades following the thermal neutron capture is described. An example of two-step cascade data from measurements with Dy-162 target is given together with interpretation of these data in terms of scissors-mode resonances built on excited levels in Dy-163. With the aim of verifying the correctness of the method results of benchmark testing measurements with a Fe-56 target are compared with the outcome of the GEANT3 simulations. (c) 2007 Elsevier B.V. All rights reserved.