# analyse_Al2O3C_Measurement

##### Al2O3:C Passive Dosimeter Measurement Analysis

The function provides the analysis routines for measurements on a FI lexsyg SMART reader using Al2O3:C chips according to Kreutzer et al., 2018

- Keywords
- datagen

##### Usage

```
analyse_Al2O3C_Measurement(object, signal_integral = NULL,
dose_points = c(0, 4), recordType = c("OSL (UVVIS)", "TL (UVVIS)"),
calculate_TL_dose = FALSE, irradiation_time_correction = NULL,
cross_talk_correction = NULL, travel_dosimeter = NULL,
test_parameters = NULL, verbose = TRUE, plot = TRUE, ...)
```

##### Arguments

- object
- signal_integral
numeric (

*optional*): signal integral, used for the signal and the background. If nothing is provided the full range is used- dose_points
numeric (

*with default*): vector with dose points, if dose points are repeated, only the general pattern needs to be provided. Default values follow the suggestions made by Kreutzer et al., 2018- recordType
character (

*with default*): input curve selection, which is passed to function get_RLum. To deactivate the automatic selection set the argument to`NULL`

- calculate_TL_dose
logical (

*with default*): Enables/disables experimental dose estimation based on the TL curves. Taken is the ratio of the peak sums of each curves +/- 5 channels.- irradiation_time_correction
numeric or '>RLum.Results (

*optional*): information on the used irradiation time correction obained by another experiements. I a`numeric`

is provided it has to be of length two: mean, standard error- cross_talk_correction
numeric or '>RLum.Results (

*optional*): information on the used irradiation time correction obained by another experiements. If a`numeric`

vector is provided it has to be of length three: mean, 2.5 % quantile, 97.5 % quantile.- travel_dosimeter
numeric (

*optional*): specify the position of the travel dosimeter (so far measured a the same time). The dose of travel dosimeter will be subtracted from all other values.- test_parameters
list (

*with default*): set test parameters. Supported parameters are:`TL_peak_shift`

All input: numeric values,`NA`

and`NULL`

(s. Details)- verbose
logical (

*with default*): enable/disable verbose mode- plot
logical (

*with default*): enable/disable plot output, if`object`

is of type list, a numeric vector can be provided to limit the plot output to certain aliquots- ...
further arguments that can be passed to the plot output

##### Details

**Working with a travel dosimeter**

The function allows to define particular aliquots as travel dosimeters. For example:
`travel_dosimeter = c(1,3,5)`

sets aliquots 1, 3 and 5 as travel dosimeters. These dose values
of this dosimeters are combined and automatically subtracted from the obtained dose values
of the other dosimeters.

**Calculate TL dose **

The argument `calculate_TL_dose`

provides the possibility to experimentally calculate a TL-dose,
i.e. an apparent dose value derived from the TL curve ratio. However, it should be noted that
this value is only a fallback in case something went wrong during the measurement of the optical
stimulation. The TL derived dose value is corrected for cross-talk and for the irradiation time,
but not considered if a travel dosimeter is defined.

**Test parameters**

`TL_peak_shift`

numeric (default: `15`

):

Checks whether the TL peak shift is bigger > 15 K, indicating a problem with the thermal contact of the chip.

`stimulation_power`

numeric (default: `0.05`

):

So far available, information on the delievered optical stimulation are compared. Compared are the information from the first curves with all others. If the ratio differs more from unity than the defined by the threshold, a warning is returned.

##### Value

Function returns results numerically and graphically:

-----------------------------------
`[ NUMERICAL OUTPUT ]`

-----------------------------------

** RLum.Results**-object

**slot:** `@data`

Element |
Type |
Description |

`$data` |
`data.frame` |
the estimated equivalent dose |

`$data_table` |
`data.frame` |
full dose and signal table |

`test_parameters` |
`data.frame` |
results with test paramaters |

`data_TDcorrected` |
`data.frame` |
travel dosimeter corrected results (only if TD was provided) |

*Note: If correction the irradiation time and the cross-talk correction method is used, the De
values in the table data table are already corrected, i.e. if you want to get an uncorrected value,
you can use the column CT_CORRECTION remove the correction*

**slot:** `@info`

The original function call

------------------------
`[ PLOT OUTPUT ]`

------------------------

OSL and TL curves, combined on two plots.

##### Function version

0.2.2 (2018-10-03 19:36:42)

##### How to cite

Kreutzer, S. (2018). analyse_Al2O3C_Measurement(): Al2O3:C Passive Dosimeter Measurement Analysis. Function version 0.2.2. In: Kreutzer, S., Burow, C., Dietze, M., Fuchs, M.C., Schmidt, C., Fischer, M., Friedrich, J. (2018). Luminescence: Comprehensive Luminescence Dating Data Analysis. R package version 0.8.6. https://CRAN.R-project.org/package=Luminescence

##### References

Kreutzer, S., Martin, L., Gu<U+00E9>rin, G., Tribolo, C., Selva, P., Mercier, N., 2018. Environmental Dose Rate Determination Using a Passive Dosimeter: Techniques and Workflow for alpha-Al2O3:C Chips. Geochromometria 45, 56-67. doi: 10.1515/geochr-2015-0086

##### See Also

##### Examples

```
# NOT RUN {
##load data
data(ExampleData.Al2O3C, envir = environment())
##run analysis
analyse_Al2O3C_Measurement(data_CrossTalk)
# }
```

*Documentation reproduced from package Luminescence, version 0.8.6, License: GPL-3*