Target-charge dependence of the breakup coupling effects in the elastic scattering of 8 B

. We perform continuum discretized coupled-channels calculations for the elastic scattering of 8 B on different targets to trace where the Coulomb-nuclear breakup coupling effects start to be dominant in the interaction of the proton halo nuclei. We observe a qualitative difference in angular distributions when the charge of the target increases as seen in the case of neutron halos, but the Coulomb-nuclear interference peak begins to disappear clearly at a relatively smaller value of Z T for the proton halos.