DY(ALPHA, XN)ER-160, DY(ALPHA, 2P XN)DY-159 AND DY(ALPHA, 4P XN)GD-149 REACTIONS

The formation of Er-160, (DY)-D-159 and Gd-149 employing natural dyspr osium as target and its irradiation with alpha-particles was the objec tive of this work. This is included in a study performed by our group on excitation functions of induced reactions for charged particles on rare earths. A target with metallic foils of Dy was irradiated in the Isochronous Cyclotron at Karlsruhe (Germany) with incident energy up t o 88.5 MeV. Due to the contributions of the precursors in the isobaric chains, we were not able to measure the absolute cross sections. Then , the determination of the cumulative cross sections were carried out. Thick target yields for the production of Er-160, Dy-159 and Gd-149 a re also presented. At present we do not know other publications about the functions studied in this work.