Accelerator mass spectrometer with ion selection in high-voltage terminal

Abstract

The folded electrostatic tandem accelerator with ion selection in a high-voltage terminal is the basis of accelerator mass spectrometry (AMS) at the BINP. Additional features of the BINP AMS are the target based on magnesium vapors as a stripper without vacuum deterioration and a time-of-flight telescope with thin films for reliable ion identification. The acceleration complex demonstrates reliable operation in a mode of 1 MV with 50 Hz counting rate of 14C+3 radiocarbon for modern samples (14C/12C ~ 1.2 × 10–12). The current state of the AMS has been considered and the experimental results of the radiocarbon concentration measurements in test samples have been presented.