Core and Projectile Excitation Effects in 12C(31Cl,30S)X Reaction at 44 MeV/nucleon Beam Energy

The effects of low-lying core(³⁰S) and projectile(³¹Cl) excited states on the full-width half maxima(FWHM) of longitudinal momentum distribution(LMD) of core fragment and single proton breakup cross-section of ¹²C(³¹Cl,³⁰S)X breakup reaction at 44 MeV/nucleon beam energy have been analyzed quantitatively for the stripping and diffraction dissociation reaction mechanisms. The calculations are carried out using standard MOMDIS code based on Glauber eikonal approximation. Our analysis shows that the inclusion of core and projectile excitation enhances the LMD width and suppresses the magnitude of the single proton breakup cross-section significantly. Additionally, in comparison with the experimental LMD width, the contribution of s and d-state in admixed sd-state have also been explored. The obtained results are informative for the lucid structural study of the ³¹Cl nucleus.