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Published August 1, 1987 | public
Journal Article Open

Subbarrier interactions of the oxygen isotopes


We derive a unified description of the low-energy elastic, inelastic, neutron transfer, and fusion cross sections of systems involving two stable oxygen isotopes. Coupled channels equations with an incoming wave boundary condition are employed, as is the no-recoil approximation; the adiabatic approximation, which violates unitarity, is avoided. A calculation with phenomenologically determined 16O + 16O and 16O-n potentials reproduces the measured cross sections within the limitations of the model. A possible error in the data analysis for 16O + 17O by Thomas et al. is pointed out.

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©1987 The American Physical Society. Received 30 March 1987. The authors thank C.A. Barnes, K. Langanke, and S.C. Wu for helpful discussions, and especially A. Winther for his constructive criticism and many suggestions. Special thanks go to J. Thomas for pointing out his doubts about the data analysis of Ref. 1 and allowing us to include his suggestions in this paper. Financial support for this work has been provided by the National Science Foundation under Grants PHY83-07732, PHY85-05682, and PHY86-04197.


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