The Neptune Plus is equipped with 10 faraday cups and 5 multipliers. The multipliers are in the axial position, attached to the high and low faraday cups as well as two additional multipliers for measuring Pb isotopes. It has 7 10^-11 amplifiers with a maximum signal range of 50V and 3 10^-12 amplifiers witha maximum signal range of 5V.
The Axiom was installed in 2012 under the direction of Dr. Steve Goldstein. It is currently used primarily for Nd, Hf, Pb, and U-Th-Pa isotopic analyses. These samples have been processed through the appropriate separatory columns. We routinely get less than 20ppm precision on Nd and Hf and less than 100ppm for Pb.
