Tracing Noble Gas Radionuclides in the Environment

Details Tracing Noble Gas Radionuclides in the Environment Tracing Noble Gas Radionuclides in the Environment

2004-02-11

arxiv.org/abs/nucl-ex/0402013v1

Ann.Rev.Nucl.Part.Sci. 54 (2004) 39-67

Physics

Nuclear Physics

Nuclear Experiment

Scientific paper

10.1146/annurev.nucl.53.041002.1

Trace analysis of radionuclides is an essential and versatile tool in modern science and technology. Due to their ideal geophysical and geochemical properties, long-lived noble gas radionuclides, in particular, 39Ar (t1/2 = 269 yr), 81Kr (t1/2 = 2.3x10^5 yr) and 85Kr (t1/2 = 10.8 yr), have long been recognized to have a wide range of important applications in Earth sciences. In recent years, significant progress has been made in the development of practical analytical methods, and has led to applications of these isotopes in the hydrosphere (tracing the flow of groundwater and ocean water). In this article, we introduce the applications of these isotopes and review three leading analytical methods: Low-Level Counting (LLC), Accelerator Mass Spectrometry (AMS) and Atom Trap Trace Analysis (ATTA).

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