Calculation of the three-nucleon problem basing on interpolation approach

Main properties of a 3H nucleus: binding energy, r.m.s. radius and the coupling constant for virtual decay 3H → n+D, are calculated for two different central potentials basing on the interpolation approach to the nuclear theory with account of the binary decay channel nD in an explicit form. The effect of the 'cluster' function in these calculations is studied, as well as the effect of the 'internal' wave function, describing the pure threenucleon bound state, in calculations of the doublet phase shift of the nD elastic scattering