Experimental determination of the Be-7+p scattering lengths
(2003) Nuclear Physics, Section A — Vol. 716, p. 211-229 (2003)
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- The Be-7 + 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 theta(c.m.) = 120.2degrees-131.1degrees and theta(c.m.) = 156.6degrees-170.2degrees using the LEDA system. From a R-matrix analysis of the cross section data. we obtain the energy and the width of the I resonance (E-X = 0.77 MeV). The iota = 0 scattering lengths a(01) = 25 +/- 9 fm (channel spin I = 1) and a(02) = -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 Be-7(p,gamma)B-8 reaction are discussed. (C) 2003 Elsevier Science B.V. All rights reserved.
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Angulo, C., Azzouz, M., Descouvemont, P., Tabacaru, G., Baye, D., Cogneau, M., Coulder, M., Davinson, T., Di Pietro, A., Figuera, P., Gaelens, M., Leleux, P., Loiselet, A., Ninane, A., Santos, F., Pizzone, R., Ryckewaert, G., de Sereville, N., & Vanderbist, F. (2003). Experimental determination of the Be-7+p scattering lengths. Nuclear Physics, Section A, 716, 211-229. https://doi.org/10.1016/S0375-9474(02)01584-1 (Original work published 2003)