Energy of Core-Excited States of Sodium Atom

The electron impact excitation of Na atoms is important for modeling of low temperature Plasma and gases of atom and molecules. There are many theoretical and experimental results for the first excited state but little information is available for excitation of higher states. We are concerned with the ground state of the np level of Sodium (Na) (n=3) to higher state. We present here the energy of many shells of Sodium (Na) atom along with other reliable published results. The data has been compared with available results. The excitation cross section to the resonance level of Sodium has been shown. The scaled Born (PWBA) results are in very good agreement with available results. It has been observed that a few high level results are satisfactory. The excitation to the further higher states results varies sharply.