analyse_SAR.CWOSL: Analyse SAR CW-OSL measurements

Description

The function performs a SAR CW-OSL analysis on a RLum.Analysis object including growth curve fitting.

Usage

analyse_SAR.CWOSL(object, signal.integral.min, signal.integral.max, 
    background.integral.min, background.integral.max, rejection.criteria = list(
      recycling.ratio = 10, 
      recuperation.rate = 10, palaeodose.error = 10), dose.points, 
    log = "", output.plot = TRUE, output.plot.single = FALSE, 
    ...)

Arguments

object

RLum.Analysis(required): input object containing data for analysis

signal.integral.min

integer (required): lower bound of the signal integral

signal.integral.max

code{integer} (required): upper bound of the signal integral

background.integral.min

integer (required): lower bound of the background integral

background.integral.max

integer (required): upper bound of the background integral

rejection.criteria

dose.points

numeric (optional): a numeric vector containg the dose points values Using this argument overwrites dose point values in the signal curves.

log

character (with default): a character string which contains "x" if the x axis is to be logarithmic, "y" if the y-axis is to be logarithmic and "xy" or "yx" if both axes are to be logarithmic. See

output.plot

logical (with default): enables or disables plot output.

output.plot.single

logical (with default): single plot output (TRUE/FALSE) to allow for plotting the results in single plot windows. Requires output.plot = TRUE.

...

further arguments that will be passed to the function plot_GrowthCurve

Value

A plot (optional) and an RLum.Results object is returned containing the following elements:
De.valuesdata.frame containing De-values, De-error and further parameters
LnLxTnTx.valuesdata.frame of all calculated Lx/Tx values including signal, background counts and the dose points.
rejection.criteriadata.frame with values that might by used as rejection criteria. NA is produced if no R0 dose point exists.
The output should be accessed using the function get_RLum.Results

Function version

0.3.4 (2014-05-13 15:18:33)

Details

The function performs an analysis for a standard SAR protocol measurements introduced by Murray and Wintle (2000) with CW-OSL curves. For the calculation of the Lx/Tx value the function calc_OSLLxTxRatio is used. Provided rejection criteria recyling.ratio: calculated for every repeated regeneration dose point. recuperation.rate: recuperation rate calculated by comparing the Lx/Tx values of the zero regeneration point with the Ln/Tn value (the Lx/Tx ratio of the natural signal). For methodological background see Aitken and Smith (1988)

References

Aitken, M.J. & Smith, B.W., 1988. Optical dating: recuperation after bleaching. Quaternary Science Reviews, 7, pp. 387-393. Duller, G., 2003. Distinguishing quartz and feldspar in single grain luminescence measurements. Radiation Measurements, 37 (2), pp. 161-165. Murray, A.S. & Wintle, A.G., 2000. Luminescence dating of quartz using an improved single-aliquot regenerative-dose protocol. Radiation Measurements, 32, pp. 57-73.

Examples

Run this code

##load data
##ExampleData.BINfileData contains two BINfileData objects 
##CWOSL.SAR.Data and TL.SAR.Data
data(ExampleData.BINfileData, envir = environment())

##transform the values from the first position in a RLum.Analysis object
object <- Risoe.BINfileData2RLum.Analysis(CWOSL.SAR.Data, pos=1)

##perform SAR analysis
analyse_SAR.CWOSL(object, 
                  signal.integral.min = 1,
                  signal.integral.max = 2,
                  background.integral.min = 900,
                  background.integral.max = 1000,
                  log = "x",
                  fit.method = "EXP")

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