Gideon Henderson, Andrew Mason, Alex Thomas
Department of Earth Sciences, University of Oxford (firstname.lastname@example.org)
We will give a brief (and hopefully not too desperately geeky – we know the audience isn’t full of mass-spec heads) description of the behaviour of the Nu instrument for U-Th analysis. In particular, we’ll address the issues of using measured U mass bias to correct for Th mass bias: Does it work? Is there collector bias? What are the limitations? And we’ll address the question of Faraday to Ion-Counter gain: How constant with time and beam size? Is there a mass or element bias? There have been recent publications providing performance information on such issues for the Thermo Neptune – the other widely used instrument for U-Th chronology. This talk will provide such a technical over-view for the Nu.