TY - GEN
T1 - Fusion and quasi-elastic scattering around the coulomb barrier
T2 - 6th Japan-Italy Symposium on Heavy-Ion Physics
AU - Hagino, K.
PY - 2009/7/22
Y1 - 2009/7/22
N2 - We invert experimental data for heavy-ion fusion cross sections at energies well below the Coulomb barrier in order to directly determine the internucleus potential between the colliding nuclei. In contrast to the previous applications of the inversion formula, we explicitly take into account the effect of channel couplings on fusion reactions, by assuming that fusion cross sections at deep subbarrier energies are governed by the lowest barrier in the barrier distribution. The surface region of the internuclear potential is determined from quasi-elastic scattering at deep subbarrier energies, while the inner part is determined with the WKB formula.We apply this procedure to the 16O +144Sm and 16O +208Pb reactions, and find that the inverted internucleus potential are much thicker than phenomenological potentials.
AB - We invert experimental data for heavy-ion fusion cross sections at energies well below the Coulomb barrier in order to directly determine the internucleus potential between the colliding nuclei. In contrast to the previous applications of the inversion formula, we explicitly take into account the effect of channel couplings on fusion reactions, by assuming that fusion cross sections at deep subbarrier energies are governed by the lowest barrier in the barrier distribution. The surface region of the internuclear potential is determined from quasi-elastic scattering at deep subbarrier energies, while the inner part is determined with the WKB formula.We apply this procedure to the 16O +144Sm and 16O +208Pb reactions, and find that the inverted internucleus potential are much thicker than phenomenological potentials.
KW - Barrier distribution
KW - Coupled-channels method
KW - Heavy-ion fusion
KW - Inter-nucleus potential
UR - http://www.scopus.com/inward/record.url?scp=67650616664&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67650616664&partnerID=8YFLogxK
U2 - 10.1063/1.3141672
DO - 10.1063/1.3141672
M3 - Conference contribution
AN - SCOPUS:67650616664
SN - 9780735406551
T3 - AIP Conference Proceedings
SP - 3
EP - 8
BT - Perspectives in Nuclear Physics - Proceedings of the 6th Japan-Italy Symposium on Heavy-Ion Physics
Y2 - 11 November 2008 through 15 November 2008
ER -