NEW METHOD FOR SOLVING THE Nd BREAKUP SCATTERING PROBLEM INCONFIGURATION SPACE

摘要

A new computational method for solving the configuration-space Faddeev equations for athree-nucleon system has been developed. This method is based on the spline-decompositionin the angular variable and on a generalization of the Numerov method for the hyperradius.The s-wave calculations of the inelasticity and phase-shift, as well as of the breakupamplitudes for nd and pd breakup scattering for lab energies 14.1 and 42.0MeV have been performed using the Malfliet-Tjon MT I-III potential. In the case of ndbreakup scattering, the results are in good agreement with those of the benchmark solution(J. L. Friar et al., Phys. Rev. C 42 (1990) 1838 and J. L. Friar et al., Phys. Rev.C 51 (1995) 2356). In the case of pd quartet breakup scattering,disagreement for the inelasticities reaches up to 6% when compared with the results of thePisa group (A. Kievsky et al., Phys. Rev. C 64 (2001) 024002). The calculated pdamplitudes fulfill the optical theorem with a good precision.