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arXiv · 1609.00447

Evidence for a dynamically refracted primary bow in weakly bound $^9$Be rainbow scattering from $^{16}$O

S. Ohkubo·Y. Hirabayashi
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Abstract

We present for the first time evidence for the existence of a dynamically refracted primary bow for $^{9}$Be+$^{16}$O scattering. This is demonstrated through the use of coupled channel calculations with an extended double folding potential derived from the density-dependent effective two-body force and precise microscopic cluster wave functions for $^{9}$Be. The calculations reproduce the experimental Airy structure in $^{9}$Be+$^{16}$O scattering well.It is found that coupling of a weakly bound $^{9}$Be nucleus to excited states plays the role of a booster lens, dynamically enhancing the refraction over the {\it static} refraction due to the Luneburg lens mean field potential between the ground states of $^{9}$Be and $^{16}$O.

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S. Ohkubo, Y. Hirabayashi. 2016-09-02. Evidence for a dynamically refracted primary bow in weakly bound $^9$Be rainbow scattering from $^{16}$O. https://doi.org/10.1103/physrevc.94.034601

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