锗同位素质谱分析  

MASS SPECTROMETRIC ANALYSIS OF GERMANIUM ISOTOPE

作　　者：邓中国[1] 

机构地区：[1]中国原子能科学研究院

出　　处：《同位素》1989年第2期92-97,共6页Journal of Isotopes

摘　　要：文章介绍了在氧化锗样品里加入硅胶混合物发射剂,以提高锗同位素的离子束流强度,用舟形单带离子源,分析锗同俭素的质谱分析方法。为修正电子倍增器歧视效应,给出了计算修正值的计算公式和计算结果,同时还对分馏效应进行了修正。The mass spectrometric analysis of germanium isotope by a boat-filament ion source, adding silica-gel mixture to germanium dioxide to enhance the measurable ion beam, is reported. The methods of correcting the germanium isotopic ratios for the mass fractionation and electron multiplier discrimination are described in detail. The results of natural germanium isotopic abundances are ^(70)Ge = 20.50%, ^(72)Ge = 27.48%, ^(73)Ge = 7.76%, ^(74)Ge = 36.51%, and ^(76)Ge= 7.75%, respectively.

关 键 词：锗 同位素 质谱分析 

分 类 号：O657.6[理学—分析化学]