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Evidence of Double Phonon Excitations in ^{16}O + ^{208}Pb Reaction

M. Dasgupta·K. Hagino·C. R. Morton·D. J. Hinde·J. R. Leigh·N. Takigawa·H. Timmers·J. O. Newton
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Abstract

The fusion cross-sections for ^{16}O + ^{208}Pb, measured to high precision, enable the extraction of the distribution of fusion barriers. This shows a structure markedly different from the single-barrier which might be expected for fusion of two doubly-closed shell nuclei. The results of exact coupled channel calculations performed to understand the observations are presented. These calculations indicate that coupling to a double octupole phonon excited state in ^{208}Pb is necessary to explain the experimental barrier distributions.

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M. Dasgupta, K. Hagino, C. R. Morton, D. J. Hinde, J. R. Leigh, N. Takigawa, H. Timmers, J. O. Newton. 1997-07-14. Evidence of Double Phonon Excitations in ^{16}O + ^{208}Pb Reaction. https://doi.org/10.1088/0954-3899%2F23%2F10%2F041

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