The activation cross section measurements of proton-induced reactions on Li and Ta in the energy region 12.5-34 MeV

0547658 - ÚJF 2022 RIV NL eng J - Journal Article
Šimečková, Eva - Majerle, Mitja - Štefánik, Milan - Mrázek, Jaromír - Novák, Jan - Magna, T.
The activation cross section measurements of proton-induced reactions on Li and Ta in the energy region 12.5-34 MeV.
Nuclear Physics. A. Roč. 1016, DEC (2021), č. článku 122310. ISSN 0375-9474. E-ISSN 1873-1554
R&D Projects: GA MŠMT EF16_013/0001812
Research Infrastructure: CANAM II - 90056
Institutional support: RVO:61389005
Keywords : activation cross sections * proton-induced reaction
OECD category: Nuclear physics
Impact factor: 1.558, year: 2021
Method of publishing: Limited access
https://doi.org/10.1016/j.nuclphysa.2021.122310

The experimental data on cross sections are necessary to clarify existing ideas on the mechanisms of nuclear reactions and for testing of nuclear models. Proton-induced reaction on 7Li serves as a source of quasi-monoenergetic neutrons which are widely used in the measurement of cross sections for neutron induced reactions. Tantalum plays an important role in technology and nuclear facilities mainly for its low induced activity (screens, degraders). In order to investigate the important nuclides, we have carried out the irradiation experiments with the variable-energy cyclotron U-120M of the NPI CAS Rez. The cross section of the reaction Li-7(p,n)Be-7(ground state+0.43 MeV) and the cross sections of the nuclides (180,178)mTa, W-178 and Hf-175 from reactions on natural tantalum were investigated, of which Ta-181(p,n)(180)gTa for the first time. The stacked-foil technique was utilized. The comparison of new results with prior data and predictions of evaluations is discussed.
Permanent Link: http://hdl.handle.net/11104/0323853