Prompt-fission γ -ray spectral characteristics from Pu 239 (nth,f)

Gatera, A. (author)

Belgya, T. (author)

Geerts, W. (author)

American Physical Society, 2017
2017
English.
In: Physical Review C. - : American Physical Society. - 2469-9985 .- 2469-9993. ; 95:6

Related links:: https://doi.org/10.1...; show more...; https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

In this paper we present new results for prompt fission γ-ray spectral characteristics from the thermal neutron induced fission of Pu∗240. The measured spectra were unfolded by using the detectors' response functions, simulated with geant4. We obtained in average per fission a γ-ray multiplicity Mγ=(7.35±0.12), a mean photon energy ϵγ=(0.85±0.02) MeV, and an average total energy released in fission Ēγ,tot=(6.27±0.11) MeV. Our results are in good agreement with historical data measured in the 1970s by Verbinski et al. and results from recent calculations in the framework of Monte Carlo Hauser-Feshbach models. Our measured average total energy is slightly smaller than the one deduced previously and present in evaluated data. From this we conclude that the Pu239(nth,f) reaction may be ruled out as possible source of γ heating underestimation, when compared with benchmark calculations based on existing nuclear data.

By the author/editor: Gatera, A.; Belgya, T.; Geerts, W.; Göök, A.; Hambsch, F. -J; Lebois, M.; show more...; Maróti, B.; Moens, A.; Oberstedt, A.; Oberstedt, S.; Postelt, F.; Qi, L.; Szentmiklósi, L.; Sibbens, G.; Vanleeuw, D.; Vidali, M.; Zeiser, F.; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Subatomic Physic ...

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.