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. |
