LSC quench-curves

Many users of LSC quench curves record a quench curve with a fiill window and neglect the fact that in practice, a much smaller and optimized window is apphed. This optimized window may be for a single label or a dual label application. Such an optimized window has much larger uncertainties than the full window. In this paper an easily applicable way is described to estimate the uncertainty of using such an optimized window. 

In LSC measurements, including samples with varying quench, a quench curve is needed. Some quench curves, such as for H and " C, are commercially available with a source certificate. On these certificates, the uncertainty of the reference source is usually given in 2 or 3 Ssource (%) Some LSC users give an uncertainty for a quench-curve which only consists of the uncertainty given on a source certificate. In practice, more uncertainties than just the source uncertainty are involved in the total uncertainty budget. 

In this paper we demonstrate how the quench curve fitting procedure, and the way a quench curve is used in LSC measurements, adds to the total uncertainty budget. 

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