Hi Iolite team,

A small bug report : the 1s% error reported by Iolite 4.8 is always 0 for the DC 207/206 dan Final 207/206 ratios, after using the VisualAge U-Pb combine. I tested with several interpolation curves but no change. I can remember it was working in earlier versions. It works with all other ratios.

Regards,

Guilhem

Edit : it is also 0 for the 207/235. The issue may come from here?

  • Joe replied to this.
    8 days later

    GuilhemH

    Having 0 error for 207/206 of the reference material selections is the expected behavior for the default UComPbine settings because every time-slice of the reference material 207/206 is corrected to the expected value. If you check "Use selection means", this corrects the selection average (rather than each time-slice) to the expected value, so in this case you get some error for each.

    Having 0 for other channels (like 207/235) is unexpected and is not what I observe here. If that is the case, please send your io4 file to support for us to investigate.

    All the best,

    • Joe
      2 months later
      17 days later

      GuilhemH

      My apologies for the late reply!

      Can you please clarify where you're seeing the 1s% being 0? Is this from an export script? In iolite's results plots and/or table? In the VizualAge live concordia? Using the session you shared, there seems to be > 0 error for 207/206 everywhere I look if "use selection mean" is checked in the DRS settings.

      All the best,

      • Joe
          8 days later

          Joe
          I agree, I was not precise enough.
          I wanted to describe the "excess scatter" error rather than individual errors... The one accessed in Data/Selections/Information (or right click/Show Properties in Time Series), for a given channel (ie Pb207/Pb206_CPS). Since Pb206/238U_CPS and Pb207/235U_CPS are associated to somme excess scatter, I would expect excess scatter on 207/206 too.

          Regards, Guilhem