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Activation cross section of the (n,2n) reaction on Hf isotopes

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Published: Mar 8, 2019
DOI: https://doi.org/10.12681/hnps.1906
Keywords:
cross section activation Hf isotopes
A. Kalamara
Department of Physics, NTUA
M. Serris
Hellenic Army Academy
A. Spiliotis
Department of Physics, NTUA
D. Sigalos
Department of Physics, NTUA
N. Patronis
Department of Physics, University of Ioannina
M. Kokkoris
Department of Physics, NTUA
M. Diakaki
Department of Physics, NTUA
M. Axiotis
INPP, NCSR "Demokritos"
A. Lagoyannis
INPP, NCSR "Demokritos"
R. Vlastou
Department of Physics, NTUA
Abstract

Cross sections of the 174Hf(n,2n)173Hf and 176Hf(n,2n)175Hf reactions have been experimentally determined relative to the 27Al(n,α)24Na reference reaction at incident neutron energies of 15.3 and 17.1 MeV by means of the activation technique. The irradiations were carried out at the 5 MV tandem T11/25 Accelerator Laboratory of NCSR "Demokritos" with monoenergetic neutron beams provided via the 3H(d,n)4He reaction, using a new Ti-tritiated target of 373 GBq activity. In the determination of the 176Hf(n,2n)175Hf reaction cross section the contamination of the 174Hf(n,γ)175Hf and 177Hf(n,3n)175Hf reactions has been taken into account. Moreover, the neutron beam energy has been studied by means of Monte Carlo simulation codes and the neutron flux has been determined via the 27Al(n,α)24Na reference reaction.

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References
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