Abstract
The triton wave function for a two body spin-dependent hard-core potential of exponential shape is obtained by solving the Faddeev three-body equations in the unitary pole approximation. It is then used to calculate the $^{3}\mathrm{H}$, $^{3}\mathrm{He}$ electromagnetic form factors. As anticipated by Gupta et al., the hard core is found to partially account for the difference between the rms charge radii of $^{3}\mathrm{He}$ and $^{3}\mathrm{H}$ which remains unexplained even after considering the ${S}^{\ensuremath{'}}$ state admixture as well as the neutron charge form factor.NUCLEAR STRUCTURE $^{3}\mathrm{H}$, $^{3}\mathrm{He}$ calculated electromagnetic form factors, hard-core exponential potential, UPA calculations.
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