A Gas Ion Source for Radiocarbon Measurements at 200 kV
By M. Ruff, L. Wacker, H. Gäggeler, M. Suter, H. Synal, Sönke Szidat. Radiocarbon: An International Journal of Cosmogenic Isotope Research, 2007
195 citations recorded by the source corpus.
The novel tabletop miniaturized radiocarbon dating system (MICADAS) at ETH Zurich features a hybrid Cs sputter negative ion source for the measurement of solid graphite and gaseous CO2 samples. The source produces stable currents of up to 6 μA C− out of gaseous samples with an efficiency of 3–6%. A gas feeding system has been set up that enables constant dosing of CO2 into the Cs sputter ion source and ensures stable measuring conditions. The system is based on a syringe in which CO2 gas is mixed with He and then pressed continuously into the ion source at a constant flow rate. Minimized volumes allow feeding samples of 3–30 μg carbon quantitatively into the ion source. In order to test the performance of the system, several standards and blanks have successfully been measured. The ratios of 14C/12C could be repeated within statistical errors to better than 1.0% and the 13C/12C ratios to better than 0.2%. The blank was <1 pMC.
Subfields: Atmospheric Science, Ecology, Spectroscopy
View Paper: https://www.semanticscholar.org/paper/fce968d24ef3fb19419e40325e317f4cc22a2401
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Atmospheric Science
In Ecology
Citations in the corpus
- MICADAS: Routine and High-Precision Radiocarbon Dating (2010, background): “It is also possible to measure small CO2 samples (<100 g carbon) directly, without having to graphitize the samples (Ruff et al. 2007, 2010).”