Low-energy nuclear reactions
with double-solenoid-based
radioactive nuclear beam
VALDIR GUIMAR\~AES
Instituto de F\'{\i}sica, Universidade de S\~ao Paulo,
E-mail: vguimaraes@if.usp.br
Abstract. The
University of Notre Dame,
{\it Nucl. Instrum. Methods Res.}
{\bf A505}, 377 (2003))
and later the University of S\~ao Paulo, Brazil
(Lichtenthaler {\it et al}, {\it
Eur. Phys. J.} {\bf A25}, S-01, 733 (2005)) adopted a system based
on superconducting solenoids to
produce low-energy radioactive
nuclear beams. In these systems the
solenoids act as thick lenses to
collect, select, and focus the
secondary beam into a scattering
chamber. Many experiments with radioactive light
particle beams
(RNB) such as $^6$He, $^7$Be,
$^8$Li, $^8$B have been performed at
these two facilities. These low-energy RNB have been used to
investigate low-energy reactions
such as elastic scattering,
transfer and breakup, providing
useful information on the structure
of light nuclei near the drip line
and on astrophysics. Total
reaction cross-sections, derived
from elastic scattering analysis,
have also been investigated for
light system as a function of
energy and the role of breakup of
weakly bound or exotic nuclei is
discussed.
Keywords. Radioactive beam; exotic nuclei;
elastic scattering;
transfer.
PACS Nos 29.30.Aj; 25.60.Bx; 25.60.Je; 25.60.Pj; 25.60.Bc; 27.20.+n