O. Sérot

First Observation of a Nuclear Recoil Peak at $$\mathcal {O}$$(100eV) with Crab: A Potential New Calibration Standard for Cryogenic Detectors

H. Kluck, H. Abele, J. Burkhart, F. Cappella et autres

Abstract Any experiment aiming to measure rare events, like Coherent Elastic neutrino-Nucleus Scattering (CE $$\upnu$$ ν NS) or hypothetical Dark Matter scattering, via nuclear recoils in cryogenic detectors relies crucially on a precise detector calibration at sub-keV energies. The Crab collaboration developed …

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Study of collision and γ -cascade times following neutron-capture processes in cryogenic detectors

G. Soum-Sidikov, H. Abele, J. Burkhart, F. Cappella et autres

The emission of $\ensuremath{\gamma}$-rays after neutron capture in a cryogenic detector can generate monoenergetic nuclear recoils in the sub-keV regime, which is of direct interest for the calibration of dark matter and coherent elastic neutrino-nucleus scattering experiments. Here we show that accurate …

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Constraints on the dipole photon strength for the odd uranium isotopes

J. Moreno-Soto, S. Valenta, E. Berthoumieux, A. Chebboubi et autres

Background: The photon strength functions (PSFs) and nuclear level density (NLD) are key ingredients for calculation of the photon interaction with nuclei, in particular the reaction cross sections. These cross sections are important especially in nuclear astrophysics and in the development of …

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Calibration of nuclear recoils at the 100 eV scale using neutron capture

Loïc Thulliez, D. Lhuillier, F. Cappella, N. Casali et autres

Abstract The development of low-threshold detectors for the study of coherent elastic neutrino-nucleus scattering and for the search for light dark matter necessitates methods of low-energy calibration. We suggest this can be provided by the nuclear recoils resulting from the γ emission …

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Investigation of neutron emission through the local odd-even effect as a function of the fission product kinetic energy

Sylvain Julien-Laferrière, A. Chebboubi, G. Kessedjian, O. Sérot et autres

A recent experimental campaign was completed at the LOHENGRIN spectrometer. It was dedicated to the determination of the local odd-even effect as a function of the fission product kinetic energy for a given mass. We discuss here the mass $A=139$ produced from …

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Fission fragments observables measured at the LOHENGRIN spectrometer

Sylvain Julien-Laferrière, L. Thombansen, G. Kessedjian, A. Chebboubi et autres

Nuclear fission yields are key data for reactor studies, such as spent fuel inventory or decay heat, and for understanding fission process. Despite a significant effort allocated to measure fission yields during the last decades, the recent evaluated libraries still need improvements …

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Neutron and γ multiplicities as a function of incident neutron energy for the Np237(n,f) reaction

Loïc Thulliez, O. Litaize, O. Sérot, A. Chebboubi

In the nuclear fission process, the excitation energy sharing mechanism between the fission fragments, the fragment angular momentum generation process and the interdependence between the two are still poorly known. The study of the neutron and $\ensuremath{\gamma}$ emission characteristics as a function …

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Study of the photon strength functions and level density in the gamma decay of the n + 234U reaction

J. Moreno-Soto, E. Berthoumieux, E. Dupont, F. Gunsing et autres

The accurate calculations of neutron-induced reaction cross sections are relevant for many nuclear applications. The photon strength functions and nuclear level densities are essential inputs for such calculations. These quantities for 235U are studied using the measurement of the gamma de-excitation cascades …

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Statistical study of the prompt-fission γ -ray spectrum for U238(n, f ) in the fast-neutron region

Liqiang Qi, M. Lebois, J. N. Wilson, A. Chatillon et autres

Prompt-fission $\ensuremath{\gamma}$-ray spectra (PFGS) have been measured for the $^{238}\mathrm{U}(n,f$) reaction using fast neutrons produced by the LICORNE directional neutron source. Fission events were detected with an ionization chamber containing actinide samples placed in the neutron beam, and the coincident prompt-fission $\ensuremath{\gamma}$ …

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Statistical study of the prompt-fission γ -ray spectrum for U 238 (n, f) in the fast-neutron region STATISTICAL STUDY of the PROMPT-FISSION ... L. QI et al.

Luo Qi, M. Lebois, J. N. Wilson, A. Chatillon et autres

Prompt-fission γ-ray spectra (PFGS) have been measured for the U238(n,f) reaction using fast neutrons produced by the LICORNE directional neutron source. Fission events were detected with an ionization chamber containing actinide samples placed in the neutron beam, and the coincident prompt-fission γ …

Studies of fission fragment yields via high-resolution γ-ray spectroscopy

J. N. Wilson, M. Lebois, Liqiang Qi, P. Amador-Celdran et autres

Precise spectroscopic information on the fast neutron induced fission of the 238U(n,f) reaction was recently gained using a new technique which involved coupling of the Miniball high resolution y-ray spectrometer and the LICORNE directional neutron source. The experiment allowed measurement of the …

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Statistical study of the prompt-fission γ-ray spectrum for [Formula : see text]) in the fast-neutron region

Qi Liu, M. Lebois, J. N. Wilson, A. Chatillon et autres