本文介绍了离子流强度累计测定同位素比的方法。
A method by cumulative intensity of ion current to analyse isotopic ratio is proposed in present paper.
用热表面离子源测定了锂同位素丰度，在样品全耗尽过程中累计离子流强度。
The isotopic ratio of lithium was determined by cumulating intensity of ion current during evaporation of all samples on evaporation filament.
实验中尝试使用不同的靶材料和辅助气体产生负离子，以提高负离子束的束流强度。
Different target materials and auxiliary gases were tried out in the experiment inorder to increase the beam intensity.
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