High-precision cross sections measurement of (n,2n) reactions on 124Xe and 78Kr isotopes in the 14 MeV region
The cross sections of 124Xe(n,2n)123Xe and 78Kr(n,2n)77Kr reactions were measured at 7 neutron energies between 13 MeV and 15 MeV. A self-designed improved organic-glass gas target was introduced to reduce both the effect of γ-ray absorbing and the uncertainty of nucleus quantification. The monoener...
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Veröffentlicht in: | Nuclear physics. A 2023-02, Vol.1030, p.122569, Article 122569 |
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Sprache: | eng |
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Zusammenfassung: | The cross sections of 124Xe(n,2n)123Xe and 78Kr(n,2n)77Kr reactions were measured at 7 neutron energies between 13 MeV and 15 MeV. A self-designed improved organic-glass gas target was introduced to reduce both the effect of γ-ray absorbing and the uncertainty of nucleus quantification. The monoenergetic neutrons were generated via the 3H(d,n)4He reaction with a solid T-Ti target, and reactions 93Nb(n,2n)92mNb were adopted as neutron flux monitors. The cross sections obtained in this work achieve the least uncertainty compared with the literatures, which are beneficial in providing better experimental constraints for the excitation curves prediction, thus improving the quality of the corresponding database. Meanwhile, these two data sets could also be used as a nuclear physics based diagnostic tool for studying properties of the deuterium-tritium plasma created in inertial confinement fusion reactions.
•124Xe and 78Kr are suitable for fuel areal density diagnosis in ICF.•(n,2n) reaction cross-sections on 124Xe and 78Kr with DT neutrons are measured.•The results significantly improved the accuracy of the present data. |
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ISSN: | 0375-9474 |
DOI: | 10.1016/j.nuclphysa.2022.122569 |