For a recent processing of U-Pb data collected from an Element2 ICP, the output file has a significant number of lines for Pb/U ratios and associated uncertainties that show either No Value or NaN. All the Pb/Pb have values (incl. 207/206 ages), as do the U and Th concs, so it appears that theres something wrong with calculating 238U/xPb for some integrations. I get the same results with the U-Pb3 and VizualAge DRS, and also with the Iolite v.3 I recently installed. When I look at the signal for those integrations with the No Value/NaN they don’t look any different than the ones that have all the values (as far as I can tell).
Anyone every had this problem or know what might be causing it?
I’m running on Windows 7, Igor 6.37, Iolite 2.5 & 3.x
Thanks in advance for any advice
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