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Experimental determination of the 7Be + p scattering lengths
Authors
Carmen Angulo Perez
Malika Azzouz
+17 more
Daniel Jean Baye
Michel Cogneau
Manoël Couder
Thomas Davinson
François de Oliveira Santos
Nicolas de Séréville
Pierre Descouvemont
Alessia Di Pietro
Pierpaolo Paolo Figuera
Michel Gaelens
Pol Leleux
Marc Loiselet
A. Ninane
Rosario Gianluca Pizzone
Guido Ryckewaert
Gabriel Tabacaru
Francis Vanderbist
Publication date
1 January 2003
Publisher
'Elsevier BV'
Doi
Abstract
The 7Be + p elastic cross section has been measured at the Centre de Recherches du Cyclotron RIB facility at Louvain-la-Neuve in the c.m. energy region from 0.3 to 0.75 MeV by bombarding a proton-rich target with a radioactive 7Be beam. The recoil protons have been detected in the angular range θc.m. = 120.2°-131.1° and θc.m. = 156.6°-170.2° using the LEDA system. From a R-matrix analysis of the cross section data, we obtain the energy and the width of the 1+ resonance (Ex = 0.77 MeV). The ℓ = 0 scattering lengths a01 = 25±9 fm (channel spin I = 1) and a02 =-7 ± 3 fm (channel spin I = 2) have been deduced. They are compared to values expected from charge-symmetry properties. Implications on the low energy S-factor of the 7Be(p,γ)8B reaction are discussed. © 2003 Elsevier Science B.V. All rights reserved.SCOPUS: re.jinfo:eu-repo/semantics/publishe
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