Article ID Journal Published Year Pages File Type
8040187 Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 2015 5 Pages PDF
Abstract
The determination of cosmogenic 53Mn in terrestrial archives has important applications, such as burial ages, exposure age and erosion rates. Accelerator mass spectrometry (AMS) is the most sensitive technique to detect minute amounts of 53Mn. 53Mn measurements were developed at the China Institute of Atomic Energy (CIAE) using the ΔE-Q3D equipped AMS system. This approach was recently optimized with the goal to reach the sensitivity required for AMS measurements of 53Mn in deep-sea ferromanganese crust (DSFC) samples. Based on these improvements of sample preparation, current beam transmission and so on, 53Mn in two samples of DSFC was measured by AMS. The ratios of 53Mn/Mn corresponding to an age of 3.77 ± 0.42 and 13.73 ± 2.74 Ma by 129I dating method are (5.01 ± 2.15) × 10−13 and (1.90 ± 0.96) × 10−13. The ratios are close to the experimental reference values, deduced from the previous research. The experimental progress, performances and results are presented in this contribution.
Related Topics
Physical Sciences and Engineering Materials Science Surfaces, Coatings and Films
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