Contribution of the 2p-1h multiple scattering correlation to the spectra of 17O and 15O

Using the method of Green's function and partial summation of multiple scattering, the contribution of 2p-1h multiple scattering correlation to the low energy spectrum of 17O and 15O is investigated in various approximations, respectively. In the calculation, the nuclear force employed is the paris potential the energy dependence of G matrices has been taken into account rigorously. The numerical results agree with the experimental data reasonably well