Abstract
The results of recent experimental and theoretical studies of low-energy nucleon–nucleon and nucleon–deuteron collisions are studied and compared with the older data. Special attention is devoted to two problems: that of the extrapolation of the phase shifts, amplitudes, and cross sections of such collisions to experimentally inaccessible energies, and that of separating the contributions of nuclear and electromagnetic interactions in the parameters of low-energy elastic scattering. Various classical and recent approaches to the solution of these problems are analyzed. A method is developed for constructing low-energy expansions which permits information on the nuclear interaction to be extracted from the measured phase shifts in systems of two and three nucleons or nuclei. The role of electromagnetic corrections to the Coulomb interaction in such scattering reactions can also be studied using this method.
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