ELASTIC SCATTERING OF He(21,3S) ATOMS BY Na(32S) ATOMS
                  AT 68meV ENERGY

E.Yu.Remeta, V.I.Kelemen, A.N.Zavilopulo, A.V.Snegursky

Institute of Electron Physics, Ukrainian Academy of Sciences
           21 Universitetska str., Uzhgorod, Ukraine

Using the metastable spectroscopy method the differential elastic
scattering cross section for He(23,1S) metastable atoms by the
ground-state sodium atoms has been studied. The partial scattering
phase-shifts have been calculated by using the variable-phase method
within the framework of the optical potential approximation.