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加速器质谱系统是近几年来发展起来的一种超灵敏同位素分析技术,已成功地分析了~(10)Be、~(14)C、~(26)Al,~(36)Cl和~(129)I等长寿命放射性同位素,分析灵敏度可达10~(15)分之一,比常规测定放射性同位素的衰变法的灵敏度高几个数量级。新技术已在地质学、考古学、海洋学、环境科学和宇宙化学等领域获得应用。本文将对加速器质谱系统测定同位素年代的方法以及在有关学科中独特的用途作一简要介绍。
The accelerator mass spectrometry system has been developed in recent years as an ultrasensitive isotope analysis technique and has been successfully analyzed for ~ (10) Be, ~ (14) C, ~ 26 Al, ~ 36 Cl and ~ 129 ) I is a long-lived radioactive isotope, the sensitivity of which can be up to 10-15 (1/1), which is several orders of magnitude higher than the conventional method of decay of radioisotopes. New technologies have been applied in geology, archeology, oceanography, environmental science and cosmochemistry. In this article, we will give a brief introduction of the method for determining the age of isotopes in accelerator mass spectrometry systems and their unique uses in related disciplines.