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Measurements of Isomeric Cross Sections for (n,) Reaction on 144Sm Isotope for Neutrons Around 14 MeV

Iskender Atilla Reyhancan, Ayse Durusoy

Nuclear Science and Engineering / Volume 174 / Number 2 / Pages 202-207

June 2013

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In this study, the activation cross sections were, first, measured for the 144Sm(n,)141mNd reaction at six different neutron energies from 13.57 to 14.83 MeV. The fast neutrons were produced by using a neutron generator, through the 3H(2H,n)4He reaction. The cyclic activation technique was used as the irradiation and counting method. Induced gamma activities were measured using a high-resolution gamma-ray spectrometer equipped with a high-purity germanium detector. In the cross-section measurements, corrections were made regarding the effects of gamma-ray attenuation, dead time, fluctuation of neutron flux, and low-energy neutrons. The measured cross sections were compared with the results of model calculations (TALYS code).

 
 
 
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