INVESTIGATIONS ON SOME METALS AND THEIR OXIDES BY NIIR

摘要

A new type of saddle field ion gun has been developed in our laboratories, and it can emit ions and a large proportion of energetic neutrals.The ion gun has been used in the neutral and ion impact radiation （NIIR） spectrometer to decrease the effect of charge accumulation on the surfaces of specimens. Some metals, including aluminium, copper and nickel and their oxides had been analysed by NIIR. By comparing the intensities of the spectral lines of the above metals and their oxides the intensification effect due to oxidation had been found. The ratio of intensities between Al I（3962（?）） for Al₂O₃ and Al I （3962（?）） for Al is 120, so the effect can be seen clearly from the above experimental results. The mechanism of the intensification effect has been discussed in the paper.