Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1997-08-08
Nucl.Phys. A626 (1997) 715-734
Physics
Nuclear Physics
Nuclear Theory
17 pages, Latex, 8 postscript figs, submitted to Nucl. Phys. A
Scientific paper
10.1016/S0375-9474(97)81560-6
To understand recently established empirical p + alpha potentials, RGM calculations followed by inversion are made to study contributions of the d + 3He reaction channels and deuteron distortion effects to the p + alpha potential. An equivalent study of the d + 3He potential is also presented. The contributions of exchange non-locality to the absorption are simulated by including an phenomenological imaginary potential in the RGM. These effects alone strongly influence the shape of the imaginary potentials for both p + alpha and d + 3He. The potentials local-equivalent to the fully antisymmetrised-coupled channels calculations have a significant parity-dependence in both real and imaginary components, which for p + alpha is qualitatively similar to that found empirically. The effects on the potentials of the further inclusion of deuteron distortion are also presented. The inclusion of a spin-orbit term in the RGM, adds additional terms to the phase-equivalent potential, most notably the comparatively large imaginary spin-orbit term found empirically.
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