GENERALIZED OSCILLATOR STRENGTH FOR THE 3S-3P AND 2P-3S TRANSITIONS IN THE SODIUM ATOM

The generalized oscillator strengths for the 3s-3p and 2p-3s excitation processes have been obtained from the related differential cross sections, measured at 1-keV impact energy and normalized to the first-Born-approximation (FBA) result for the 3s-3p process at the scattering angle of 2-degrees. Theoretical values for the 3s-3p excitation process were also determined using the Glauber approximation, both considering the interaction of the incident electron with the atomic electrons not directly involved in the excitation process and (N - 1) nuclear charges and by neglecting this interaction. FBA results were determined for both the 3s-3p and 2p-3s processes. Theoretical values for the elastic differential cross section were also determined.