Luminescence (version 0.2.2)

Calc_OSLLxTxRatio: Calculate Lx/Tx ratio for CW-OSL curves.

Description

Calculate Lx/Tx ratios from two given OSL curves.

Usage

Calc_OSLLxTxRatio(Lx.data,Tx.data,
                  signal.integral,
                  background.integral)

Arguments

Lx.data

data.frame (required): requires a CW-OSL shine down curve (x = time, y= counts)

Tx.data

data.frame (optional): requires a CW-OSL shine down curve (x = time, y = counts). If no input is given the Tx.data will be treated as NA and no Lx/Tx ratio is calculated.

signal.integral

vector (required): requires a vector with the limits for the signal integral.

background.integral

vector (required): requires a vector with the bounds for the background integral.

Value

• Returns a data.frame with the following structure: $ LnLx $ LnLx.BG $ TnTx $ TnTx.BG $ Net_LnLx $ Net_LnLx.Error $ Net_TnTx.Error

Details

The integrity of the chosen values for the signal and background integral is checked by the function; the signal integral limits have to be lower than the background integral limits. If a vector is given as input instead of a data.frame, an artificial data.frame is produced. The error calculation is done according to Galbraith (2002).

References

Duller, G., 2007. Analyst.

Galbraith, R.F., 2002. A note on the variance of a background-corrected OSL count. Ancient TL, 20 (2), 49-51.

See Also

Analyse_SAR.OSLdata, plot_GrowthCurve

Examples

##load data
data(ExampleData.LxTxOSLData)

##calculate Lx/Tx ratio
results<-Calc_OSLLxTxRatio(Lx.data,Tx.data, signal.integral = c(1:2), background.integral = c(85:100))
print(results)