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Experimental setup and procedure for the measurement of the 7Be(n,alpha)alpha reaction at n_TOF

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Experimental setup and procedure for the measurement of the 7Be(n,alpha)alpha reaction at n_TOF (2,430Mb)
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10.1016/j.nima.2016.05.089
 
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hdl:2117/88936

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Cosentino, L.
Musumarra, A.
Barbagallo, Massimo
Calviño Tavares, FranciscoMés informacióMés informacióMés informació
Casanovas, Adria
Cortés Rossell, Guillem PereMés informacióMés informacióMés informació
Riego Pérez, AlbertMés informacióMés informacióMés informació
Tarifeño Saldivia, Ariel EstebanMés informacióMés informació
Document typeArticle
Defense date2016-09-11
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
ProjectDATOS NUCLEARES PARA FISICA NUCLEAR E INGENIERIA NUCLEAR (MICINN-FPA2008-04972-C03-03)
CHANDA - solving CHAllenges in Nuclear DAta (EC-FP7-605203)
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,a)a 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 dif¿culties stemming from the huge 7Be ¿-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.
CitationCosentino, L., Musumarra, A., Barbagallo, M., Calviño, F., Casanovas, A., Cortes, G., Riego, A., Tarifeño, A. Experimental setup and procedure for the measurement of the 7Be(n,alpha)alpha reaction at n_TOF. "Nuclear instruments and methods in physics research. Section A, accelerators SP", 11 Setembre 2016, vol. 830, p. 197-205. 
URIhttp://hdl.handle.net/2117/88936
DOI10.1016/j.nima.2016.05.089
ISSN0168-9002
Publisher versionhttp://www.sciencedirect.com/science/article/pii/S016890021630482X
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  • Departament de Física - Articles de revista [1.975]
  • ANT - Advanced Nuclear Technologies Research Group - Articles de revista [126]
  • INTE - Institut de Tècniques Energètiques - Articles de revista [276]
  • NERG - Grup de Recerca d'Enginyeria Nuclear - Articles de revista [21]
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