The present work is devoted to study of He I excitation in low energy He-He collisions. The purpose of this work is the investigation of mechanisms of atomic levels excitation at collision energies, corresponding the conditions of adiabatic approximation. The results of the experimental investigation of the excitation cross sections of He I 3 1 P, 3 3 P, 3 1 D, 3 3 D levels in the collision energy range from threshold up to 500 eV (c.m. system) and degree of polarization for 2 1 S-3 1 P, 2 3 S-3 3 P, 2 1 P-3 1 D and 2 3 P-3 3 D transitions in this energy range are represented. Also the degree of polarization for 2 1 P-n 1 D transitions as function of the main quantum number (3 ≤ n ≤ 12) at the fixed collision energy is represented.PACS : 34.50.Fa

No abstract

No abstract

No abstract