ISOMER-SELECTED DECAY OF THE GDR IN DY-156

The strength distribution of high-energy gamma-rays emitted in the sta tistical decay of the 156Dy compound nucleus, with E = 92.5 MeV, has been measured inclusively and for selected decay pathways in which iso mers in 149Dy, 151Dy and 152Dy were populated. For both spectra a defo rmation \beta\ = 0.3 is deduced and the centroid energies agree with t hose found from ground-state systematics. The high-energy gamma-ray sp ectrum triggered on isomeric decay shows an increase of the width of t he GDR in comparison with the inclusive spectrum.