Experimental determination of the $^{7}$Be + p scattering lengths - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Nuclear Physics A Year : 2003

Experimental determination of the $^{7}$Be + p scattering lengths

C. Angulo
  • Function : Author
M. Azzouz
  • Function : Author
P. Descouvement
  • Function : Author
G. Tabacaru
  • Function : Author
D. Baye
  • Function : Author
M. Cogneau
  • Function : Author
M. Couder
  • Function : Author
T. Davinson
  • Function : Author
A. Di Pietro
  • Function : Author
P. Figuera
  • Function : Author
M. Gaelens
  • Function : Author
P. Leleux
  • Function : Author
M. Loiselet
  • Function : Author
A. Ninane
  • Function : Author
R.G. Pizzone
  • Function : Author
G. Ryckewaert
  • Function : Author
F. Vanderbist
  • Function : Author

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.

Dates and versions

in2p3-00012750 , version 1 (29-04-2003)

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Cite

C. Angulo, M. Azzouz, P. Descouvement, G. Tabacaru, D. Baye, et al.. Experimental determination of the $^{7}$Be + p scattering lengths. Nuclear Physics A, 2003, 716, pp.211-229. ⟨10.1016/S0375-9474(02)01584-1⟩. ⟨in2p3-00012750⟩
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