This study aims on the effect of nucleon mean free path on differential cross sections of tritium-emission spectra for (p, ³H) reactions on ²⁷Al, ^{54, 56}Fe, ⁸⁹Y, ¹²⁰Sn, ¹⁹⁷Au, ²⁰⁸Pb and ²⁰⁹Bi induced by 62 MeV protons in the pre-equilibrium reaction mechanisms. The pre-equilibrium calculations were carried out by using the geometry dependent hybrid model. The calculated results are compared with experimental data existing in literature and found to be in good agreement. Furthermore, using different multiplication factor for the mean free path in the calculation changes the differential cross sections of tritium emission spectra.