Abstract
Discussions are presented concerning the absorptive part W of the optical potential for heavy ion reactions at near- and sub-barrier energies. Particularly, the information obtained from simultaneous analyses of elastic and fusion cross section data is presented, showing that the fusion part of W should have an appreciable value in the Coulomb barrier region, and thus cause a substantial absorption there. This contradicts assumptions made in all coupled-channel calculations performed in the past. Information obtained for the direct reaction part of W, as well as the real potential are also discussed.
This is a preview of subscription content, log in via an institution to check access.
Preview
Unable to display preview. Download preview PDF.
References
See for instance, Proceeding of the Symposium on The Many Facts of Heavy-Ion Fusion Reactions, Argonne National Laboratory, March 1986, Report No. ANY-PHY 86-1.
J. S. Lilley, B. R. Fulton, M. A. Nagarajan, I. J. Thompson and D. W. Banes, Phys. Lett. 151B, 181 (1985).
B. R. Fulton, D. W. Banes, J. S. Lilley, M. A. Nagarajan and I. J. Thompson, Phys. Lett. 162B, 55 (1985).
A. M. Stefanini et al., Nucl. Phys. A 456, 509 (1986).
K.-H. Rehm, Proceeding of the Sympsoium on The Many Facts of Heavy-Ion Fusion Reactions, Argonne National Laboratory, March 1986, Report No. ANY-PHY 86-1, p. 27.
C. H. Dasso, S. Landowne and A. Winther, Nucl. Phys. A 405, 381 (1983).
M. J. Rhoades-Brown and M. Prakash, Phys. Rev. Lett. 53, 333 (1984).
S. Landowne and S. C. Pieper, Phys. Rev. C29, 1352 (1984).
I. J. Thompson, M. A. Nagarajan, J. S. Lilley and B. R. Fulton, Phys. Lett. 157B, 250 (1985).
G. R. Satchler, M. A. Nagarajan, J. S. Lilley and I. J. Thompson, Ann. of Phys. 178, 110 (1987).
See, for instance, a recent review article by J. R. Birkelund and J. R. Huizenga, Ann. Rev. Nucl. Part. Sci. 33, 265 (1983).
T. Udagawa, B. T. Kim and T. Tamura, Phys. Rev. C 32, 124 (1985).
T. Udagawa and T. Tamura, Phys. Rev. C 29, 1922 (1984).
M. Hussein, Phys. Rev. C 30, 1962 (1984).
F. Videbaek et al., Phys. Rev. C15, 954 (1977).
E. Vulgaris, L. Grodzins, S. G. Steadman, and R. Ledoux, Phys. Rev. C33, 2017 (1986); Phys. Rev. C34, 1495 (1986), and optical parameters are in Phys. Rev. C34, 1495 (1986).
A. M. Stefanini et al., Phys. Rev. Lett. 59, 2852 (1987).
A. M. Stefanini et al., Phys. Lett. B 185, 15 (1987).
H. Sann et al., Phys. Rev. Lett. 47, 1248 (1980); R. Bock et al., Nucl. Phys. A 388, 334 (1982).
B. T. Kim, T. Udagawa and T. Tamura, Phys. Rev. C 33, 370 (1986).
T. Udagawa, S.-W. Hong and T. Tamura, Phys. Rev. C 32, 1435 (1985).
S. W. Hong, T. Udagawa and T. Tamura, to be published.
T. Murakami, C.-C. Sahm, R. Vandenbosch, D. D. Leach, A. Ray, and M. J. Murphy, Phys. Rev. C34, 1353 (1986).
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1988 Springer-Verlag
About this paper
Cite this paper
Udagawa, T. (1988). Absorption under the Coulomb barrier; Its importance for the scattering and fusion of heavy ions at sub- and near-barrier energies. In: Signorini, C., Skorka, S., Spolaore, P., Vitturi, A. (eds) Heavy Ion Interactions Around the Coulomb Barrier. Lecture Notes in Physics, vol 317. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-50578-4_25
Download citation
DOI: https://doi.org/10.1007/3-540-50578-4_25
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-50578-5
Online ISBN: 978-3-540-46058-9
eBook Packages: Springer Book Archive