By the same authors

(n,cp) reactions study at the n_TOF facility at CERN: Results for the Cosmological Lithium problem

Research output: Chapter in Book/Report/Conference proceedingConference contribution


  • (The n-TOF Collaboration [])


Publication details

Title of host publicationProceedings of the 15th International Conference on Nuclear Reaction Mechanisms, NRM 2018
DatePublished - 1 Jan 2018
Number of pages6
EditorsFrancesco Cerutti, Alfredo Ferrari, Toshihiko Kawano, Francesc Salvat-Pujol, Patrick Talou
Original languageEnglish
ISBN (Electronic)9789290835196

Publication series

NameProceedings of the 15th International Conference on Nuclear Reaction Mechanisms, NRM 2018


The Big Bang Nucleosynthesis describes the production of the lightest nuclides from deuterium to Li at the early stages of the Universe. While a general good agreement is found for most of the isotopes involved in the synthesis, a serious discrepancy between the predicted abundance of 7Li and the related experimental observations is still present. This discrepancy has been referred since several decades as Cosmological Lithium Problem. In one last attempt to find nuclear solutions to this longstanding conundrum, the 7Be(n,α)4He and 7Be(n,p)7Li reactions, that affect predominantly the production of 7Li via the destruction of his parent nucleus 7Be, have been studied. Here we present the 7Be(n,α)4He and 7Be(n,p)7Li reaction cross-section measurements performed at the high-resolution n_TOF facility using the time-of-flight technique and high purity samples. The result of the experiments definitely rules out neutron induced reactions as a solution to the puzzle, thus indicating that explanations have to be sought out in other Physics scenarios.

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