Refractive effects in the scattering of loosely bound nuclei

Abstract

A study of the interaction of loosely bound nuclei 6,7Li at 9 and 19 AMeV with light targets has been undertaken. With the determination of unambiguous optical potentials in mind, elastic data for four projectile-target combinations and one neutron transfer reaction 13C(7Li,8Li)12C have been measured on a large angular range. The kinematical regime encompasses a region where the mean field (optical potential) has a marked variation with mass and energy, but turns out to be sufficiently surface transparent to allow strong refractive effects to be manifested in elastic scattering data at intermediate angles. The identified exotic feature, a "plateau" in the angular distributions at intermediate angles, is fully confirmed in four reaction channels and interpreted as a pre-rainbow oscillation resulting from the interference of the barrier and internal barrier farside scattering subamplitudes.

arXiv comment19 pages, 14 figures, 3 tables to submit to Phys. Rev. C

References in corpus (5)

• Optical model potentials involving loosely bound p-shell nuclei around 10 MeV/A
• Asymptotic normalization coefficients for 8B->7Be+p from a study of 8Li->7Li+n
• Optical potentials of halo and weakly bound nuclei
• Refractive elastic scattering of carbon and oxygen nuclei: The mean field analysis and Airy structures
• Airy-like patterns in heavy ion elastic scattering

Cited by in corpus (4)

• Nuclear rainbow scattering and nucleus-nucleus potential
• Reaction and proton-removal cross sections of ${}^6$Li, ${}^7$Be, ${}^{10}$B, ${}^{9,10,11}$C, $^{12$N, ${}^{13,15}$O and ${}^{17}$Ne on Si at 15 to 53 MeV/nucleon
• Astrophysical S factor for the radiative capture 12N(p,gamma)13O determined from the 14N(12N,13O)13C proton transfer reaction
• Microscopic study of the ${}^7$Li-nucleus potential