| Popis: |
For pt.IV, see abstr. A5820 of 1972. A phase shift analysis of electron-helium scattering in the energy range from 10-2 to 102 eV and of electron-neon scattering from 3*10-2 to 60 eV is reported, using new measurements of the elastic differential cross sections by McConkey and Preston (see abstr. A71429 of 1973). Error estimates are assigned to the derived s, p and d wave phase shifts for electron-helium scattering, and the conjectured dispersion relation further tested. The results of the analysis of electron-neon scattering remain in good agreement with adiabatic-exchange theory, though the s-wave phase shift shows anomalous behaviour at intermediate energies. Estimates of the imaginary part of the optical potential are obtained for both systems. |
