A study of the appearance of Li Ka

摘要

Using electron beam excitation, Li Ka of insulator samples, such as oxides other than LiF, is impossible, or very hard to detect. Metallic Li, on the other hand, is easy to observe. Therefore, an examination using cluster calculation was carried out. From the calculation results, it was revealed that the Li Ka of LiF obtained by our measurement did not correspond to the correct state of Li in LiF. This spectrum might be emitted from the Li atom which was reduced and changed to the metallic state due to the electron beam irradiation. It was also suggested that the existence of the conduction electron at valence might easily cause the dipole transition process for the relaxation of the hole on the shallow core hole. Such a hole is generally relaxed by the Auger relaxation process.