Measurement of the prompt fission γ-rays from slow neutron-induced fission of &lt;sup&gt;235&lt;/sup&gt;U with STEFF

Wright, T.; Smith, A.G.; Sosnin, N.V.; Bennett, S.A.; Davies, P.J.; Popescu, A.V.; Ryan, J.A.; Sekhar, A.; Warren, S.; Aberle, O.; Dressler, R.; Heinitz, S.; Kivel, N.; Maugeri, E.A.; Schumann, D.; Žugec, P.

doi:10.1140/epja/s10050-024-01277-8

Measurement of the prompt fission γ-rays from slow neutron-induced fission of ²³⁵U with STEFF

Wright T, Smith AG, Sosnin NV, Bennett SA, Davies PJ, Popescu AV, Ryan JA, Sekhar A, Warren S, Aberle O, Dressler R, Heinitz S, Kivel N, Maugeri EA, Schumann D, Žugec P, et al.

Citation

Wright, T., Smith, A. G., Sosnin, N. V., Bennett, S. A., Davies, P. J., Popescu, A. V., … Žugec, P. (2024). Measurement of the prompt fission γ-rays from slow neutron-induced fission of ²³⁵U with STEFF. European Physical Journal A: Hadrons and Nuclei, 60(3), 70 (11 pp.). https://doi.org/10.1140/epja/s10050-024-01277-8

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:61208

The average energy and multiplicity of prompt γ-rays from slow neutron-induced fission of ²³⁵U have been measured using the STEFF spectrometer at the neutron time-of-flight facility n_TOF. The individual responses from 11 NaI scintillators were corrected for multiple γ-ray interactions, prompt fission neutrons and background counts before being deconvolved to estimate the emitted spectrum of prompt fission γ-rays. The results give an average γ-ray energy E¯_γ of 1.71(5) MeV and multiplicity ν¯_γ of 2.66(18) considering γ-rays emitted within the energy range 0.8–6.8 MeV. The n_TOF data has a slightly larger E¯_γ and smaller ν¯_γ than other recent measurements, however the product of the two is in agreement within quoted uncertainties.

Details

Publication Type

Journal Article

Title

Measurement of the prompt fission γ-rays from slow neutron-induced fission of ²³⁵U with STEFF

Author(s)

Wright, T.

Smith, A.G.

Sosnin, N.V.

Bennett, S.A.

Davies, P.J.

Popescu, A.V.