Discussion on the Graphite Yield of Zn-TiH2 Method in the Preparation of Accelerator Mass Spectrometry 14C Sample

Abstract

There are many kinds of methods for preparing graphite target for 14C dating by accelerator mass spectrometer (AMS). Increasing the yield of graphite is of great significance for optimizing the preparation processes of graphite target and improving the performance of graphite target. In this paper, the studies relating to the graphite target preparation by Zn-TiH2 method were cited as theoretical foundations. The relationship between the yield of graphite and isotopic fractionation was proved by the relevant researches. Different calculation methods of graphite yield were compared, and suggestions for improvement were put forward. The factors influencing the yield of graphite in experimental processes were discussed. The optimum experimental conditions for preparing graphite target by Zn-TiH2 method were briefly summarized.

Keywords

• accelerator mass spectrometry(ams) 14c sample preparation graphite target zn-tih2 method graphite yield