SOLVING A REALISTIC INVERSE SCATTERING PROBLEM FOR D(4)HE SCATTERING AND SOME GENERAL-PROPERTIES OF THE INTERACTION OF COMPOSITE-PARTICLES

A realistic inverse problem of deuteron scattering by a He-4 nucleus i s solved over the entire energy interval 0-43 MeV in which phase-shift analyses have been performed for this system. The resulting complex i nteraction potentials make it possible to establish some new interesti ng features of the interaction of deuterons and other composite partic les with nuclei at low and intermediate energies. In particular, a loc al form of the polarization potential for the deuteron at low energies is obtained for the first time in the form of a surface attractive we ll. It is shown that this character of the polarization potential is i n qualitative agreement with general theoretical expectations and with the results of the latest three body calculations of deuteron interac tion with a 4He nucleus, which employ a wide variational basis. It is also shown that the behavior of the F- and G-wave phase shifts with to tal angular momentum J=L+1 is explained by the existence of strongly i nelastic potential resonances.