PRECISION AND MASS FRACTIONATION IN C-14 ANALYSIS WITH AMS

Authors
VANDERBORG K ALDERLIESTEN C DEJONG AFM VANDENBRINK A DEHAAS AP KERSEMAEKERS HJH RAAYMAKER JEMJ
Citation
K. Vanderborg et al., PRECISION AND MASS FRACTIONATION IN C-14 ANALYSIS WITH AMS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 123(1-4), 1997, pp. 97-101
Citations number
9
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
123
Issue
1-4
Year of publication
1997
Pages
97 - 101
Database
ISI
SICI code
0168-583X(1997)123:1-4<97:PAMFIC>2.0.ZU;2-0
Abstract
Modifications of the Utrecht AMS set-up have resulted in C-14 analysis with a routine 0.4% analytical precision and a detection limit of 2.0 x 10(-15). In analysis with Be-10, Al-26 and Cl-36 the precision is a few percent and the detection limit 10(-14). Measurements on small ca rbon samples (< 0.4 mg) revealed a sample-mass dependent isotope fract ionation effect, which together with the background limits the precisi on for the smallest samples (0.02 mg) to a few percent.