Detrital K-Feldspar Geochronology by Collision Cell MC-ICPMS/MS

Performance of the double-Wien filter of the Neoma MC-ICPMS/MS with an application to copper stable isotope compositions

“…43 Initially, the precell mass lter was a bespoke quadrupole, which allowed a prototype Proteus to measure several isotope systems. [44][45][46] Lack of sensitivity and non-reproducible mass bias prevented the Proteus from being widely adopted by the MC-ICPMS community, and the low-energy quadrupole was replaced by a highenergy double Wien lter on the Vienna prototype. 47,48 The double-focusing electrostatic analyzer and magnetic sector geometry is standard and inspired from that of the Neptune MC-ICPMS, while the collection system has been totally redesigned as described in Dauphas et al 49 and Télouk et al 50 In this study, we rst explore the performance of the double-Wien lter to on-line prelter ions with different m/z using various combinations of B and S values.…”

“…43 Initially, the precell mass filter was a bespoke quadrupole, which allowed a prototype Proteus to measure several isotope systems. 44–46 Lack of sensitivity and non-reproducible mass bias prevented the Proteus from being widely adopted by the MC-ICPMS community, and the low-energy quadrupole was replaced by a high-energy double Wien filter on the Vienna prototype. 47,48…”