Dirac Optical Potential of p-14Be and Pronounced 'Long-Tail' Shape

摘要

＜正＞ The Dirac optical potential for p-~14Be elastic scattering is evaluated by the relativistic impulse approxima-tion. Each of the real part and the imaginary part of the potential shows a pronounced "long tail" for the proton elasticscattering from halo nucleus ~14Be compared with the potentials for proton scattering from its adjacent nuclei ~12C and~16O, whicb do not have halo structures. This kind of "long tail" phenomenon suggests another siguature for halo nuclei.