出版社:SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要:The reactions 170Yb(g ,n)169Yb, 169Tm(p,n)169Yb and 166Er(a,n)169Yb have been measured with the activation method at energies close to the neutron threshold or to the Gamow window, respectively. Naturally composed target material was used and the induced activities were determined by g spectroscopy with HPGe detectors in a low background environment. The reaction 170Yb(g ,n)169Yb was studied using bremsstrahlung radiation supported by the electron accelerator S-DALINAC at the Technische Universität Darmstadt. The charged particle induced reactions 169Tm(p,n)169Yb and 166Er(a,n)169Yb weremeasured using thea-particle and proton beamprovided by the FN Tandem Van de Graaff accelerator at the University of Notre Dame. Preliminary cross sections are presented and compared to theoretical predictions by the two Hauser-Feshbach codes TALYS and NON-SMOKER. The data can be used to optimize input parameters of the afore mentioned codes.