Precision and mass fractionation in 14C analysis with AMS
Abstract
Modifications of the Utrecht AMS set-up have resulted in 14C analysis with a routine 0.4% analytical precision and a detection limit of 2.0 × 10-15. In analysis with 10Be, 26Al and 36Cl the precision is a few percent and the detection limit 10-14. Measurements on small carbon samples (< 0.4 mg) revealed a sample-mass dependent isotope fractionation effect, which together with the background limits the precision for the smallest samples (0.02 mg) to a few percent.
- Publication:
-
Nuclear Instruments and Methods in Physics Research B
- Pub Date:
- March 1997
- DOI:
- 10.1016/S0168-583X(96)00713-6
- Bibcode:
- 1997NIMPB.123...97V