TY - JOUR
T1 - Potential inversion with sub-barrier fusion data reexamined
AU - Hagino, K.
AU - Watanabe, Y.
N1 - Copyright:
Copyright 2007 Elsevier B.V., All rights reserved.
PY - 2007/8/10
Y1 - 2007/8/10
N2 - We invert experimental data for heavy-ion fusion reactions 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 sub-barrier energies are governed by the lowest barrier in the barrier distribution. We apply this procedure to the O16+Sm144 and O16+Pb208 reactions, and find that the inverted internucleus potential are much thicker than phenomenological potentials. A relation to the steep fall-off phenomenon of fusion cross sections recently found at deep sub-barrier energies is also discussed.
AB - We invert experimental data for heavy-ion fusion reactions 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 sub-barrier energies are governed by the lowest barrier in the barrier distribution. We apply this procedure to the O16+Sm144 and O16+Pb208 reactions, and find that the inverted internucleus potential are much thicker than phenomenological potentials. A relation to the steep fall-off phenomenon of fusion cross sections recently found at deep sub-barrier energies is also discussed.
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U2 - 10.1103/PhysRevC.76.021601
DO - 10.1103/PhysRevC.76.021601
M3 - Article
AN - SCOPUS:34547925545
VL - 76
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
SN - 0556-2813
IS - 2
M1 - 021601
ER -