Proton-separation vertex constants for sd-shell nuclei from an analysis of peripheral transfer reactions

The differential cross sections for the (3He, d) reactions on 16O nuclei at $$E_{3_{He} } = 42$$ MeV and on 19F and 26Mg nuclei at $$E_{3_{He} } = 22.3$$ MeV are measured for angles from the forward hemisphere. These data and those from the literature are analyzed by using a procedure that combines the method of distorted waves and the elements of the dispersion approach. It is established that the reactions in question are peripheral. Phenomenological values of nuclear vertex constants for proton separation are obtained both for the ground state and for low-lying excited states of the final nucleus, and the corresponding spectroscopic factors are evaluated. It is indicated that these data can be used for nuclear astrophysics.

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