Elsevier

Nuclear Physics A

Volume 91, Issue 2, February 1967, Pages 382-398
Nuclear Physics A

Phase shift analysis of d-α scattering

https://doi.org/10.1016/0375-9474(67)90049-8Get rights and content

Abstract

The phase shifts for d-α scattering were determined between 2 and 10 MeV from measured differential cross sections and tensor polarization parameters. Complex phase shifts of orbital angular momentum l ≦ 2 were used and coupling between the s- and d-wave J = 1 phase shifts was taken into account. The coupling was found to be small. The existence of the broad Jπ = 2+ and Jπ = 1+ resonances was confirmed and resonance parameters were determined. The real and imaginary parts of the p-waves remain less than 20° which provides strong evidence against the existence of the previously reported T = 0 p-wave triplet in 6Li. Comparison of the phase shifts with optical model phase shifts shows that all essential features of d-α scattering below 10 MeV can be described by a simple potential with an l · s term. The potential depth is about twice that for p-α scattering but the spin orbit interaction is considerably weaker for the d-α than for the p-α interaction.

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    ††

    Work supported in part by the U.S. Atomic Energy Commission.

    Now at the University of Arizona, Tucson, Arizona.

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