Fusion and quasi-elastic scattering around the coulomb barrier: Determination of inter-nucleus potential

K. Hagino

doi:10.1063/1.3141672

Fusion and quasi-elastic scattering around the coulomb barrier: Determination of inter-nucleus potential

K. Hagino

SCI - Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

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.

Original language	English
Title of host publication	Perspectives in Nuclear Physics - Proceedings of the 6th Japan-Italy Symposium on Heavy-Ion Physics
Pages	3-8
Number of pages	6
DOIs	https://doi.org/10.1063/1.3141672
Publication status	Published - 2009 Jul 22
Event	6th Japan-Italy Symposium on Heavy-Ion Physics - Tokai, Japan Duration: 2008 Nov 11 → 2008 Nov 15

Publication series

Name	AIP Conference Proceedings
Volume	1120
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	6th Japan-Italy Symposium on Heavy-Ion Physics
Country	Japan
City	Tokai
Period	08/11/11 → 08/11/15

Keywords

Barrier distribution
Coupled-channels method
Heavy-ion fusion
Inter-nucleus potential

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.3141672

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Hagino, K 2009, Fusion and quasi-elastic scattering around the coulomb barrier: Determination of inter-nucleus potential. in Perspectives in Nuclear Physics - Proceedings of the 6th Japan-Italy Symposium on Heavy-Ion Physics. AIP Conference Proceedings, vol. 1120, pp. 3-8, 6th Japan-Italy Symposium on Heavy-Ion Physics, Tokai, Japan, 08/11/11. https://doi.org/10.1063/1.3141672

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abstract = "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.",

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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.

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KW - Coupled-channels method

KW - Heavy-ion fusion

KW - Inter-nucleus potential

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