Cross-section measurements of the Dy156(n,2n)Dy155 reaction at neutron energies higher than 17 MeV

Abstract

In the present work the cross section of the $^{156}\mathrm{Dy}(n,2n)^{155}\mathrm{Dy}$ reaction (${E}_{\mathrm{th}}=9.51$ MeV) was measured at neutron beam energies above 17 MeV: 17.1, 18.1, and 19.0 MeV. The irradiations were performed at the 5.5-MV tandem accelerator of the Institute of Nuclear and Particle Physics at N.C.S.R. ``Demokritos'', where quasi-monoenergetic neutron beams were produced via the $^{3}\mathrm{H}(d,n)^{4}\mathrm{He}$ reaction. The cross-section measurements were performed by means of the activation technique relative to the $^{27}\mathrm{Al}(n,\ensuremath{\alpha})^{24}\mathrm{Na}$ reference reaction. Within the present work the experimental study is framed by theoretical calculations performed via the talys code (version 1.95).