Study of the isotonic shifts of charge form factor for the light proton-rich nuclei

Charge form factors of elastic electron scattering on light proton-rich nuclei on the N=8, 10, 20, and 28 isotonic chains are calculated using the relativistic eikonal approximation with the charge density distributions from the RMF model. The results show that the occupation of the 2s1/2 state by protons has a great influence on the charge density distribution and consequently on the charge form factor. The results can be useful for the study of behavior of the valence-proton wave functions for such light proton-rich nuclei as can be considered as a cluster plus proton(s), and thus the proton-halo phenomenon. And also the results can be used as a very good test of the single-particle motion determined by the mean field model.