Search

LexStudio 2.0 - Operating software Taking luminescence to a new level User-friendly and advanced operating software Modern, professionally designed user interfacensitivity: Based on user feedback a new graphical user interface which combines clear arrangement and usability is developed by Freiberg Instruments Game-changing data format: The newly developed data format connects the benefits of XML with the requirements of luminescence application and science, providing transparency, readability and flexibility New sequence editor: The new sequence editor provides almost unlimited variability creating entire individual as well as standard measurement sequences User account management system : Several user access levels assure the lexsyg device is only operated by qualified personnel Automated sample recognition in the sample wheel: A sensor-based sample recognition system provides the status of each position of the sample wheel at any time Filter management system: The LexStudio 2.0 software contains a filter management system providing convenient implementation and testing of new detection filter combinations Loading the sample wheel : The new sensor-based monitoring of the sample charging allows the loading of the sample wheel with new aliquots as well as allocating new measurement sequences while the lexsyg device is taking measurements Reduced measurement time by time-optimized device operations: Simultaneous execution of independent sequence steps (e.g. filterwheel movement, sample transport, changing of measurement position, etc.) reduces the required time for each measurement sequence SAR Plug-In SAR Plug-In (SARPI) is a new software feature added to LexStudio 2.0 for quick and convenient SAR sequence creation. No more copy and paste. It can be easily expanded to other protocols and it is compatible with all lexsyg devices. User action Select 4 individual parameters Estimated and test dose Stimulation wavelength and filter combination All other parameters are user defined presets Automated software functionality Sequence creation based on SAR protocol Recuperation test Recycling test Hot bleach Individual adjustment by sequence editor is possible as well SAR Plug-in Get in touch Do not hesitate to contact us – we are available to assist you with any inquiries or requests. Use our inquiry tool or reach out via email: sales @ freiberginstruments.com

Ceramics, pottery, bricks and statues Optically Stimulated Luminescence (OSL) as well as Thermoluminescence (TL) can be applied to heated objects made from clay. While the typology of ceramics is a backbone of many archaeological chronologies, establishing the age directly for certain types of ceramics is sometimes required. Optically Stimulated Luminescence (OSL) as well as Thermoluminescence (TL) can be applied to heated objects made from clay. Ceramic/pottery dating to establish chronologies or the age of a site Brick dating to provide detailed insight into building histories Statues made of pottery or their clay core for the manufacturing date Authenticity dating of ceramic objects, pottery or statues to determine if objects are fake Reproducibility of multiple aliquot procedures is enhanced by lexsyg heater plate performance Barnett SM (2000) Luminescence dating of pottery from later prehistoric Britain. Archaeometry 42: 431-457 Lamothe M (2004) Optical dating of pottery, burnt stones, and sediments from selected Quebec archaeological sites. Canadian Journal of Earth Sciences 41: 659-667 Bouquillon A, Zink A & Porto E (2010) The Louvre Tanagras in the light of scientific analysis. Authenticity, Materials, Provenances. In: Jeammet V (Ed. Tanagras -Figurines for life and eternity - The musee du louvre's collection of greek figurines. 286-309, Fundacion Bancaja Valencia TL dating of non-diagnostic ceramics compared to fabric/typological context estimates (from Barnett 2000) Matching Products TL/OSL series lexsygsmart The most sensitive TL/OSL reader Learn more TL/OSL series lexsygresearch The most advanced TL/OSL reader Learn more Get in touch Do not hesitate to contact us – we are available to assist you with any inquiries or requests. Use our inquiry tool or reach out via email: sales @ freiberginstruments.com

Tooth enamel and quartz grains Archaeological sites often contain teeth from animals or humans or the site is contained in quartz bearing sediment. The enamel can be dated with Electron Spin Resonance (ESR/EPR), but it is often required to combine this method with U-series dating. Tooth enamel to date an archaeological site Quartz grains to date the sedimentation which covers a site or is related to the archaeology Magnettech's high sensitivity ESR spectrometer MS 400 and MS 5000 Bahain, J.-J., Falgueres, C., Laurent, M., Voinchet, P., Dolo, J.-M., Antoine, P., and Tuffreau, A. (2007). ESR chronology of the Somme River Terrace system and first human settlements in Northern France. Quaternary Geochronology 2, 356-362. Voinchet, P., Despriée, J., Tissoux, H., Falguères, C., Bahain, J. J., Gageonnet, R., Dépont, J., and Dolo, J. M. (2010). ESR chronology of alluvial deposits and first human settlements of the Middle Loire Basin (Region Centre, France). Quaternary Geochronology 5, 381-384. ESR spectrum of gamma irradiated horse enamel from the Middle Palaeolithic archaeological site of Piégu (France) measured with a MiniScope MS 5000 benchtop ESR spectrometer (sample courtesy J.-J. Bahain, Muséum National d’Histoire Naturelle, Paris) Get in touch Do not hesitate to contact us – we are available to assist you with any inquiries or requests. Use our inquiry tool or reach out via email: sales @ freiberginstruments.com

Pulsing Pulsing the stimulation allows the separation of quartz and feldspar luminescence signals for dating of mixed mineral samples Sometimes mineral separation in sediment or solid samples is not possible (polymineral samples), especially in cases of intergrowth of minerals. Pulsing (i.e. short light stimulation) the stimulation employs the different decay times of luminescence signals from different minerals in order to detect the luminescence signal predominately from a single mineral. Separate luminescence signals from different minerals Avoid tedious sample preparation See also spatially resolved luminescence Denby PM, Botter-Jensen L, Murray AS, Thomsen KJ & Moska P (2006) Application of pulsed OSL to the separation of the luminescence components from a mixed quartz/feldspar sample. Radiation Measurements 41, 774-779. Feathers JK, Casson MA, Schmidt AH & Chithambo ML (2012) Application of pulsed OSL to polymineral fine-grained samples. Radiation Measurements 47, 201-209. Luminescence decay of quartz and feldspar signals (from Denby et al., 2006) Matching Products TL/OSL series lexsygsmart The most sensitive TL/OSL reader Learn more TL/OSL series lexsygresearch The most advanced TL/OSL reader Learn more Get in touch Do not hesitate to contact us – we are available to assist you with any inquiries or requests. Use our inquiry tool or reach out via email: sales @ freiberginstruments.com

Unheated rock surfaces The last light exposure of rock surfaces can be dated for establishing the age of e.g. the construction and destruction of walls Granite or other quartz/feldspar containing rocks are preferentially dated with spatially resolved luminescence Marble, limestone surfaces are dated with Optically Stimulated Luminescence (OSL) as well as Thermoluminescence (TL) Spatially resolved luminescence is especially useful in this application with e.g. EMCCD-camera in lexsyg detector changer Greilich S & Wagner GA (2006) Development of a spatially resolved dating technique using HR-OSL. Radiation Measurements 41, 738-743. IRSL dating of the light exposure due to turning over of rocks which created the Nasca lines (Greilich & Wagner, 2006) Matching Products TL/OSL series lexsygsmart The most sensitive TL/OSL reader Learn more TL/OSL series lexsygresearch The most advanced TL/OSL reader Learn more Get in touch Do not hesitate to contact us – we are available to assist you with any inquiries or requests. Use our inquiry tool or reach out via email: sales @ freiberginstruments.com

Sediment dating When sediments cover an archaeological site they are exposed to light and the mineral grains are bleached.Such events can be dated by luminescence methods and the age employed to determine the age of an archaeological site through its related sedimen Optically Stimulated Luminescence (OSL, TT-OSL) dating of quartz grains from sediments Infrared Stimulated Luminescence (IRSL, pIRIR, IR-RF) dating of feldspar grains from sediments Trench sediment filling with OSL/IRSL With a suite of stimulation wavelengths the lexyg devices provide an all in one solution for many sediment and mineral types Profile of ice wedge in fine grained sediments suitable for Luminescence dating (photo Richter). Matching Products TL/OSL series lexsygsmart The most sensitive TL/OSL reader Learn more TL/OSL series lexsygresearch The most advanced TL/OSL reader Learn more Get in touch Do not hesitate to contact us – we are available to assist you with any inquiries or requests. Use our inquiry tool or reach out via email: sales @ freiberginstruments.com

LexEva - Evaluation software Taking luminescence to a new level User-friendly and advanced operating software LexEva is a newly released evaluation software developed for analysis in luminescence research and dating. LexEva was adapted to the "Luminescence" package developed by the R. Luminescence Group (RLG) , an user interface. The main idea is to provide easy access to the powerful "Luminescence" package containing algorithms and plots, which were developed by and for the community. One can perform a simple SAR calculation or transform CW OSL curves into LM luminescence curves via. various interpolations. TL analysis with plateau evaluation, including additive and regeneration regression analysis of multiple aliquots. You can test some of the new analysis like IRSAR RF or implement your own calculations and become a part of the development. Get in touch Do not hesitate to contact us – we are available to assist you with any inquiries or requests. Use our inquiry tool or reach out via email: sales @ freiberginstruments.com

TLStudio - Operating & Evaluation software for routine TL dosimetry New graphical user interface with user friendly features and sequence editing options User account management system Transperent workflow Professionally designed user interface Intelligent parameter selection Live data visualization Easy programming of individual and standard measurement sequences Data acquisition, storage and export (xml format) Data acquisition of actual temperature etc., Automated background subtraction (optional) Storage of calibration values for individual dosimeters and automated processing of results Get in touch Do not hesitate to contact us – we are available to assist you with any inquiries or requests. Use our inquiry tool or reach out via email: sales @ freiberginstruments.com

Time resolved luminescence To investigate charge carrier dynamics, e.g. lifetimes Time resolved luminescence measurements allow the determination of the life-times of electron states and thus description of the kinetics involved. This allows the correlation to different centres and discrimination of processes. Employing excitation pulses of appropriate time length with adequate off-times for luminescence detection allows the separation of different luminescence signals, which might be related to different minerals (e.g. feldspar and quartz) and can be used for determining two different doses for a single sample (e.g. pulsed OSL for dating purposes). Frequency-domain life time measurements at nanosecond resolution Time-domain life time measurements at microsecond resolution Time-resolved ratiometric measurements Investigate quenching Chithambo ML (2007) The analysis of time-resolved optically stimulated luminescence: I. Theoretical considerations. Journal of Physics D: Applied Physics 40, 1874-1879. Chithambo ML (2007) The analysis of time-resolved optically stimulated luminescence: II. Computer simulations and experimental results. Journal of Physics D: Applied Physics 40, 1880-1889. Collier BB & McShane MJ (2013) Time-resolved measurements of luminescence. Journal of Luminescence 144, 180-190. Pagonis V, Chithambo ML, Chen R, Chruścińska A, Fasoli M, Li SH, Martini M & Ramseyer K (2014) Thermal dependence of luminescence lifetimes and radioluminescence in quartz. Journal of Luminescence 145, 38-48. Principle of pulsed excitation and emission of a dual fluorescence and phosphorescence measurement (from Collier & McShane, 2013) Matching Products TL/OSL series lexsygresearch The most advanced TL/OSL reader Learn more Get in touch Do not hesitate to contact us – we are available to assist you with any inquiries or requests. Use our inquiry tool or reach out via email: sales @ freiberginstruments.com

Radiofluorescence A technique for dosimetric dating of potassium feldspar to establish sedimentation ages. Infrared-Radiofluorescence (IR-RF) is a technique for dosimetric dating of potassium feldspar to establish sedimentation ages. This method avoids some of the problems of other trapped-charge techniques, which employ the signal from recombination, by measuring the IR-signal from an electron capture at luminescence traps during ionization. High saturation dose allows dating up to ca. 600 ka No fading or electron competition Simple single-aliquot regenerative (IR-SAR) procedure (Krbetschek & Erfurt 2003) Buylaert JP, Jain M, Murray AS, Thomsen KJ & Lapp T (2012) IR-RF dating of sand-sized K-feldspar extracts: A test of accuracy. Radiation Measurements 47, 759-765. Erfurt G & Krbetschek MR (2003) IRSAR - A single-aliquot regenerative-dose dating protocol applied to the infrared radiofluorescence (IR-RF) of coarse-grain K-feldspar. Ancient TL 21, 35. Wagner GA, Krbetschek M, Degering D, Bahain J-J, Shao Q, Falguères C, Voinchet P, Dolo J-M, Garcia T & Rightmire GP (2010) Radiometric dating of the type-site for Homo heidelbergensis at Mauer, Germany. Proceedings of the National Academy of Sciences 107, 19726-19730. IR-RF ages (squares) being in agreement with ESR-US ages (circles) for sands from the type locality of Homo heidelbergensis (from Wagner et al., 2010) Matching Products TL/OSL series lexsygresearch The most advanced TL/OSL reader Learn more Get in touch Do not hesitate to contact us – we are available to assist you with any inquiries or requests. Use our inquiry tool or reach out via email: sales @ freiberginstruments.com