UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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2024-11-23 18:22

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Conference: Bucharest University Faculty of Physics 2023 Meeting


Section: Nuclear and Elementary Particles Physics


Title:
Neutron Induced Reactions of Interest for Rare Event Physics Experiments


Authors:
Flavius-Andrei MOTI, Mihaela PARVU


Affiliation:
University of Bucharest, Faculty of Physics, POBox MG-11, Magurele-Bucharest



E-mail
Cpt.Flavius@yahoo.com


Keywords:
cosmic rays, neutrons, nuclear reactions


Abstract:
Currently, many experiments trying to detect and understand the nature of dark matter and to study neutrino’s properties are being developed. Given the low interaction rate of these particles with matter, these experiments are affected by backgrounds that can be induced by all sorts of nuclear reactions, leading to false signals in the detection system. We have studied the cosmic neutron flux and the nuclear reactions induced by this component of the cosmic rays on 3 different elements (Al-27, Fe-56, Si-28) with 4 different outcomes for each: (n,2n), (n,α), (n,γ) and (n,p). We investigated the interaction cross sections as a function of the incident energy of the neutrons and the results are presented. Also, the experimental values are compared to the evaluated cross sections, and a discussion on the importance of the uncertainty on the interaction rate is done.


Acknowledgement:
This work was performed with the financial support of the Romanian Program PNCDI III, Programme 5, Module CERN-RO, under contract no. 04/2022.