Elsevier

Nuclear Physics A

Volume 176, Issue 3, 6 December 1971, Pages 645-656
Nuclear Physics A

A study of 16O by the reaction 14N(3He, p)16O

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Abstract

The structure of the states of 16O has been studied by means of the (3He, p) reaction on 14N. Angular distributions were measured between θlab = 5° and 60° at 18 MeV incident energy. The data were analyzed using DWBA and the shell-model wave functions of Zuker, Buck and McGrory. The transitions to the negative-parity 1p-1h states at Ex = 6.13, 7.12, 8.87 and 10.95 MeV are described very well. The 4p-4h structure of the positive-parity states at 6.05, 6.92 and 10.35 MeV is confirmed by their low cross sections. The 2+ state at 9.85 MeV and the positive-parity states between 11.08 and 13.66 MeV are found to contain only a small part of the 2p-2h strength and it is suggested to identify these states with Arima's 4p-4h states with an excited 12C core. The 2p-2h states seem to lie mainly above 14 MeV excitation energy.

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    Present address: Lawrence Radiation Laboratory, University of California, Berkeley, USA.

    ††

    Present address: GSI, Darmstadt, Germany.

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