  For calculation of the single-channel nucleon-nucleon scattering a
phase-functions method has been proposed. Using a phase-functions method the
following phase shifts of a np- scattering numerically for 1S0-, 1P1-, 3P0-,
3P1-, 1D2-, 3D2-, 1F3-, 3F3-, 1G4-, 3G4- states are calculated. The
calculations has been performed using realistic nucleon-nucleon potentials
Argonne group (Av18, Av14sscc, Av8', Av8'sscc, Av6', Av4', Av2'). Obtained
phase shifts are in good agreement with the results obtained in the framework
of other methods. Using the obtained phase shifts we have calculated the full
cross-section np- scattering.
