Luminescence (version 1.1.2)

correct_PMTLinearity: Dead-time (linearity) Correction for Photomultiplier tubes (PMT)

Description

Correct dead-time (also linearity) of PMT counts to avoid saturation effects, depending on pulse-pair-resolution of individual PMTs.

Usage

correct_PMTLinearity(object, PMT_pulse_pair_resolution = NULL)

Value

Returns the same type of object type as object.

Arguments

object

RLum.Analysis RLum.Data.Curve (required): object with records to correct; can be a list of such objects

PMT_pulse_pair_resolution

numeric (with default): pulse-pair resolution in ns. Values can be found on the PMT datasheets. If NULL nothing is done.

How to cite

Kreutzer, S., Mittelstrass, D., 2025. correct_PMTLinearity(): Dead-time (linearity) Correction for Photomultiplier tubes (PMT). In: Kreutzer, S., Burow, C., Dietze, M., Fuchs, M.C., Schmidt, C., Fischer, M., Friedrich, J., Mercier, N., Philippe, A., Riedesel, S., Autzen, M., Mittelstrass, D., Gray, H.J., Galharret, J., Colombo, M., Steinbuch, L., Boer, A.d., 2025. Luminescence: Comprehensive Luminescence Dating Data Analysis. R package version 1.1.2. https://r-lum.github.io/Luminescence/

Author

Sebastian Kreutzer, Institute of Geography, Heidelberg University (Germany)
Dirk Mittelstrass, Institute of Geography, Heidelberg University (Germany) , RLum Developer Team

Details

We correct for count linearity using a well-known formula that can be found for example in the Hamamatsu Photomultiplier handbook (Hamamatsu Photonics K.K., 2017):

$$N = \frac{M}{1 - M*t}$$

where \(N\) (in s\(^{-1}\)) is the true count rate, \(M\) (in s\(^{-1}\)) the measured count rate, and \(t\) (in s) the pulse pair resolution.

References

Hamamatsu Photonics K.K., 2017. Photomultiplier Tubes: Basics and Applications, 4th edition. ed. Hamamatsu.

Mittelstraß, D., Kreutzer, S., Schmidt, C., 2022. OSLdecomposition: Signal component analysis for optically stimulated luminescence. tools:::Rd_expr_doi("10.32614/CRAN.package.OSLdecomposition")

Examples

o <- set_RLum("RLum.Data.Curve")
correct_PMTLinearity(o, PMT_pulse_pair_resolution = 10)