Shallow and diffuse spin-orbit potential for proton elastic scattering from neutron-rich helium isotopes at 71 MeV/nucleon

Abstract

Vector analyzing powers for proton elastic scattering from 8He at 71 MeV/nucleon have been measured using a solid polarized proton target operated in a low magnetic field of 0.1 T. The spin-orbit potential obtained from a phenomenological optical model analysis is found to be significantly shallower and more diffuse than the global systematics of stable nuclei, which is an indication that the spin-orbit potential is modified for scattering involving neutron-rich nuclei. A close similarity between the matter radius and the root-mean-square radius of the spin-orbit potential is also identified.

arXiv comment6 pages, 4 figures, accepted for publication in Physical Review C Rapid Communication

References in corpus (3)

• Reduction of the spin-orbit potential in light drip-line nuclei
• Analyzing power for the proton elastic scattering from neutron-rich 6He nucleus
• Analyzing power in elastic scattering of 6He from polarized proton target at 71 MeV/nucleon

Cited by in corpus (7)

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• Spin observables in 71A MeV 6,8He-hydrogen scattering
• Open Shell Effects in a Microscopic Optical Potential for Elastic Scattering of ${}^{6(8)}$He
• Spins in Exotic Nuclei: RI-beam Experiments with Polarized Targets
• Rescattering effects in proton interaction with light neutron rich nuclei