+ One-grain experiment
We measured 20 single-grain discs with one grain per disc from sample NCL-1821112, which has been bleached for 48 hours in a solar simulator prior to measurements. Please visit the Netherlands Centre for Luminescence dating (NCL) database for more information on the sample background at: https://www.lumid.nl/. On the website go to the 'projects' tab and search for NCL-code 1821. The measurement protocol, as reported in Table 1 of the manuscript, was repeated 8 times for incremental aperture steps.
+ Reader comparison experiment
We measured 20 single-grain discs per reader all originating from NCL-1821112, which has been bleached for 48 hours in a solar simulator prior to measurements, to compare the performance of both devices.
+ Measurement protocols and data formats
The measurement protocols were written in Riso's sequence editor software. All Riso software is downloadable at: https://www.fysik.dtu.dk/english/research/radphys/research/radiation-instruments/tl_osl_reader/software.
The raw data is stored in a Riso .binx file which can be opened in Riso's analyst software environment.
EMCCD generated luminescence images has been analyzed in Riso's Viewer+ software before further analyses.
+ Processing and analysis scripts in R
All processing of data (modifications, calculations, etx) and analysis of data was performed in R. All scripts are commented. Per experiment an R script was written.
+ Figures and tables
All figures and tables were created through R. Refer to the R scripts for detailed information within the script.