Speaker
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There were considered in [1–3] some issues of experimental study of photonuclear reactions under γ-quanta with energies Eγ in the region of excitation of E1 giant resonance in atomic nuclei with spectrometry of emitted fast neutrons for the γ-source from collimated Compton backscattering at the National Center for Physics and Mathematics (NCPhM, Sarov, Russia [4]). In this report for heavy nuclei, including actinides, the following were analyzed:
• main possible partial photonuclear reactions in pointed out nuclei with neutron emission occurring at Eγ < 20 MeV [5, 6];
• parameters of the collimated γ-sources with Eγ < 20 MeV from collimated Compton backward scattering High Intensity γ-ray Source (HIγS, Durham, USA [7]) and NCPhM in its several variants [2, 3]);
• characteristics of the multi-channel neutron spectrometer proposed for NCPhM [2, 3];
• opportunities of conducting photoneutron experiments with measurements of multiplicity, as well as energy and time distributions of neutrons produced in heavy nuclei, including actinides, at NCPhM γ-sources with proposed in [2, 3] the scintillation spectrometer of fast neutrons which uses both amplitude and time-of-flight data.
1. S.S.Belyshev et al. Moscow Univ.Phys.Bull. 2023. V.78. No.3, P.284.
2. A.M.Lapik et al. Bull.Russ.Acad.Sci.Phys. 2024, V.88. No.8. P.1191.
3. S.S.Belyshev et al. Moscow Univ. Phys. Bull. 2025. V.80. No.3.
4. L.V.Grigorenko et al. FIZMAT, 2023, V.3–4. P.1 (in russian).
5. S.S.Dietrich, B.L.Berman. At.Data Nucl.Data Tables 1988. V.38, P.199.
6. V.V.Varlamov et al. Report INDC(NDS)-394 (IAEA, Vienna, Austria, 1999).
7. H.R.Weller et al. Progr.Part.Nucl.Phys. 2009, V.62. P.257.
