Elastic scattering measurement for 17O + 58Ni
at Coulomb barrier
with Silicon strip detectors exploiting ASIC electronics, C. Signorini1,2, M. Mazzocco1,2,, P.
Molini1,2, D.
Pierroutsakou3, C. Boiano5, C. Manea2, D. Corti2, P. Di Meo3, M. Nicoletto2, M.Bettini2 , A. Boiano3, L.
Castellani2, A.DeRosa3,4,
L.Dona’8 ,
G. Galet2, T.
Glodariu 9, J. Grebosz7, A. Guglielmetti5,6, G.
Inglima3,8, M. La
Commara3,4, C.Mazzocchi5,6 , C.Parascandolo1, 2,
L.Parascandolo3, M. Romoli3, M.
Sandoli3,4, R.
Silvestri3,4, F. Soramel1,2, L. Stroe9, M.Tessaro 2 , N. Toniolo8,
F.Veronese2,
P.G.Zatti 2 , 1Phys. Dept.,
Padova University, via F. Marzolo 8, I-35131 Padova, 2INFN - Padova, 3INFN -
Napoli, 4Phys.Dept.
Napoli University, 5INFN
- Milano, 6Phys. Dept.
Milano University,
7IFJ Krakow,
Poland, 8 INFN - LNL Legnaro (Padova), 9NIPNE
Magurele, Romania. −
The scattering
cross section
of 17O
by 58Ni has been studied at several energies around
the Coulomb
barrier at the tandem Van de Graaff accelerator of the LNL
laboratory. This is
also a part of the commissioning of double side silicon strip
detectors with a
new type of ASIC based electronics which reduces the number of
electronics
channels necessary of one order of magnitude. The choice of the
system was also
motivated to get complementary information for our studies with
the 17F
loosely bound (Sp = 601 keV) at our LNL beam line
dedicated to RIB
in flight production (Eur.Phys.J ST 150(2007)47).
The system demonstrated an energy resolution <80 keV with 5.5
MeV alpha
sources and ΔE/E=1.2 % for 17O scattered beam. The
quasi elastic reaction
cross sections evaluated from the scattering data were the
following: σ(mb)
235, 452, 590, 694, 779, 869 respectively at the energies (MeV)
42.5, 45.0,
50.0, 52.5, 55.0. The comparison of these data with the results
for “similar
systems” 17F+58Ni (Phys.Rev.C82(2010)054604)), 16O+58Ni
(Nucl.Phys.A582(1995)314)),
8B+58Ni
(Phys.Rev. C79(2009)021601(R))
suggest
a small influence of the breakup process into the reaction
mechanism at
the barrier for the RIB 17F.