MEASUREMENT OF EXCITATION CROSS SECTIONS OF TARGET ATOM Na BY HIGHLY CHARGED ION N 4+ IMPACT

The emission cross sections and excitation cross sections have been measured in collisions between N 4+ ion and Na atoms. The experimental results show that the excitation cross sections of NaI(3p-3s) are vety large, about １０ -15 ｃｍ 2 . The data of cross sections have been given in this paper and reasons for the large excitation cross sections of NaI(3p-3s) have been discussed qualitatively.