UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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2024-11-22 1:32
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Conference: Bucharest University Faculty of Physics 2018 Meeting


Section: Nuclear and Elementary Particles Physics


Title:
Prompt Emission Calculations for 233U(nth,f)


Authors:
Ana MATEI(1), Anabella TUDORA(1)


Affiliation:
1) University of Bucharest, Faculty of Physics, 405 Atomistilor, Magurele, jud. Ilfov,P.O.Box MG-11, RO-077125, Romania


E-mail
anamateiro@yahoo.ro, anabellatudora@hotmail.com


Keywords:
prompt emission in fission, nuclear fission


Abstract:
Detailed prompt emission calculations of 233U(nth,f) are for the first time reported, answering to the international request of accurate evaluated data for the fissile nucleus 233U of the Th-U fuel cycle. The deterministic model of prompt emission in fission “Point-by-Point” (Ref.[1] and references therein), developed at the Faculty of Physics of the University of Bucharest, is used. This model includes a global treatment of the sequential emission by employing a residual temperature distribution [2]. The model itself is validated in this work by the very good agreement of the prompt neutron multiplicity matrix result ν(A,TKE) with the existing experimental data. Other experimental data concerning single distributions of different prompt emission quantities (e.g. prompt neutron multiplicity, ν(A), ν(TKE), prompt γ-ray energy Eγ(A) etc.) are also very well described by the model results, assuring the validation of both the modelling and the fission fragment distribution Y(A,TKE). The reported prompt γ-ray results are useful in the processing of measured data of a recent experiment devoted to the prompt γ-ray emission of 233U(nth,f), performed at the Budapest research reactor by an international team (including experimentalists from ELI-NP and a master student from the University of Bucharest, which is one the authors of this presentation).


References:

[1] A. Tudora and F.-J. Hambsch, Eur. Phys. J. A.53 (2017) 159.

[2] A. Tudora, F.-J. Hambsch, V. Tobosaru, Eur. Phys. J. A.54 (2018) 87.