Elsevier

Nuclear Physics A

Volume 213, Issue 1, 8 October 1973, Pages 22-34
Nuclear Physics A

The 12C(7Li, α)15N triton transfer reaction

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Abstract

The 12C(7Li, α) reaction was studied up to 16 MeV excitation energy in 15N. Excitation functions for eight α-groups were measured in the 28–38 MeV incident energy range. A high resolution angular distribution was taken at E7Li = 35 MeV with the aid of a multi-gap magnetic spectrograph. The contribution of the compound nucleus channel to the α-intensities was estimated. A finite range DWBA calculation in which the three transferred nucleons enter the sd shell was attempted. Results of the above-mentioned studies and the strong selectivity of the reaction indicate a predominant direct reaction mechanism at the present relatively high bombarding energy. Comparison between the experimental results and calculations based on the weak coupling model of Lie and Engeland, exhibit reasonable correlation between the strongly excited states in the present study and the 3p-4h model states for which the contribution of the core excitation is small, and this gives a possible interpretation of the high selectivity of the reaction.

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    Work supported by Stiftung Volkswagenwerk.

    ††

    Part of the thesis submitted by I.T. in partial fulfillment of the requirements for the D.Sc. degree. Present address: Max-Planck-Institut für Kernphysik, Heidelberg.

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