Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume 268, Issue 11-12, Pages 1954-1959Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nimb.2010.02.107
Keywords
Accelerator mass spectrometry; Terrestrial cosmogenic nuclides (TCN); Calibration
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Following the installation and acceptance test of the French 5 MV AMS facility ASTER, the focus has been on improving the capability for routine measurements of Be-10 and Al-26. Quality assurance has been established by the introduction of traceable AMS standards for each nuclide, by self-monitoring through participation in round-robin exercises and proficiency testing, and by surveillance of long- and short-time variability of blank and reference materials. A background level of 3 x 10(-14) makes ASTER well-suited for measuring Ca-41/Ca-40 in the 10(-12) region, which is sufficient for a wide range of applications. Routine AMS measurements of volatile elements like Cl-36 and I-129 will most likely become feasible in the very near future as the result of significant improvements in the ion source design. (C) 2010 Elsevier B.V. All rights reserved.
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