Study of neutron induced reactions in rare earth isotopes
Abstract
Within the present work the (n,2n) reaction channel was studied for the rare earth isotopes: 162Er, 156Dy and 165Ho. In particular, for 165Ho the cross sections of populating the ground and the isomeric state of 164Ho were measured independently. The reactions cross sections were measured via the activation technique relative to the 197Au(n,2n)196Au, 27Al(n,a)24Na and 93Nb(n,2n)92mNb reference reactions. The quasi-monoenergetic neutron beams were produced via the 2H(d,n)3He (DD) and 3H(d,n)4He (DT) reactions, while the primary deuteron beams were delivered by the 5.5 MV Tandem Van de Graaff accelerator of the institute of Nuclear and Particle Physics at N.C.S.R. “Demokritos”, Athens, Greece. After the end of the irradiations the induced activity in the samples was measured through gamma-ray spectroscopy using HPGe detectors. For the accurate physics interpretation of the experimental data the GEANT4 toolkit was extensively used for the simulation of the HPGe detectors. The developed c ...
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