Cosentino, L., Musumarra, A., Barbagallo, M. et al. (129 more authors) (2016) Experimental setup and procedure for the measurement of the 7Be(n,α)α reaction at n-TOF. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. pp. 197-205. ISSN 0168-9002
Abstract
The newly built second experimental area EAR2 of the n-TOF spallation neutron source at CERN allows to perform (n, charged particles) experiments on short-lived highly radioactive targets. This paper describes a detection apparatus and the experimental procedure for the determination of the cross-section of the 7Be(n,α)α reaction, which represents one of the focal points toward the solution of the cosmological Lithium abundance problem, and whose only measurement, at thermal energy, dates back to 1963. The apparently unsurmountable experimental difficulties stemming from the huge 7Be γ-activity, along with the lack of a suitable neutron beam facility, had so far prevented further measurements. The detection system is subject to considerable radiation damage, but is capable of disentangling the rare reaction signals from the very high background. This newly developed setup could likely be useful also to study other challenging reactions requiring the detectors to be installed directly in the neutron beam.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 The Authors. Published by Elsevier B.V. |
Keywords: | Be(n,α)α reaction,Big bang nucleosynthesis,Cosmological lithium problem,n-TOF spallation neutron source |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 07 Nov 2016 09:25 |
Last Modified: | 06 Dec 2024 00:12 |
Published Version: | https://doi.org/10.1016/j.nima.2016.05.089 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1016/j.nima.2016.05.089 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:107061 |