Naslov
First results of the 241Am(n,f) cross section measurement at the Experimental Area 2 of the n_TOF facility at CERN

Autori
Eleme, Z. ; ... ; Bosnar, Damir ; ... ; Žugec, Petar

Kolaboracija
N_TOF Collaboration

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, kratko priopćenje, znanstveni

Izvornik
EPJ Web of Conferences 239 / Ge, Z. ; Shu, N. ; Chen, Y. ; Wang, W. ; Zhang, H. - : EDP Sciences, 2020, 1-5

ISBN
978-2-7598-9107-8

Skup
International Conference on Nuclear Data for Science and Technology (ND 2019)

Mjesto i datum
Peking, Kina, 19.05.2019. - 24.05.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
n_TOF, 241Am, fission, neutron time of flight

Sažetak
Feasibility, design and sensitivity studies on innovative nuclear reactors that could address the issue of nuclear waste transmutation using fuels enriched in minor actinides, require high accuracy cross section data for a variety of neutron-induced reactions from thermal energies to several tens of MeV. The isotope 241Am (T_{;1/2}; = 433 years) is present in high-level nuclear waste (HLW), representing about 1.8% of the actinide mass in spent PWR UOx fuel. Its importance increases with cooling time due to additional production from the β-decay of 241Pu with a half-life of 14.3 years. The production rate of 241 Am in conventional reactors, including its further accumulation through the decay of 241Pu and its destruction through transmutation/incineration are very important parameters for the design of any recycling solution. In the present work, the 241 Am(n, f) reaction cross-section was measured using Micromegas detectors at the Experimental Area 2 of the n_TOF facility at CERN. For the measurement, the 235U(n, f) and 238U(n, f) reference reactions were used for the determination of the neutron flux. In the present work an overview of the experimental setup and the adopted data analysis techniques is given along with preliminary results.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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