Résumé du preprint DAPNIA-07-236

DAPNIA-07-236
Strong pickup-coupling effect on p + 10Be and 11Be elastic scattering around 40 A.MeV incident energy
N. Keeley,V. Lapoux
To explore the nature of the coupling effects on 
p + 10Be and p + 11Be elastic scattering at 
incident energies of 39.1 A.MeV and at 38.4 A.MeV, 
respectively coupled reaction channels (CRC) 
calculations were performed for the 10Be(p,d)9Be 
and 11Be(p,d)10Be* pickup to the ground state of 
9Be and the 5.960 MeV 1- and 6.263 MeV 2- doublet
of excited states in 10Be at the corresponding 
incident energies. We show that within the CRC 
framework the coupling effect on the elastic 
scattering is significant in both cases and 
produces effective absorption in the entrance 
channel. This suggests that the use of a fitted 
p + 10Be optical model potential may lead to too 
much absorption in the core plus proton 
interaction in XCDCC-type calculations for the 
p + 11Be system and that coupling to the 
11Be(p,d)10Be* pickup should be explicitly 
included in such studies.

 

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