Lexsyg Lifecycle: From Field Sample to Stores Aliquot

Posted by Rotunda Scientific on

Lexsyg Lifecycle

A simplified workflow showing how Lexsyg accessories support each stage of luminescence sample handling.


Field

Collect light-safe samples and preserve stratigraphy at the outcrop or trench.

Collect light - safe samples and preserve stratigraphy at the outcrop or trench.
Sampling Tube & Punch – The sampling tube and punch set is designed for dating applications to extract cores samples from the field. Using the punch, sampling tube and hammer a core of material may be extracted. Once extracted light tight caps protect the sample on each end of the sample tube for transportation to the dating lab.
Sampling Tubes – Additional opaque sampling tubes are available to expand the number of samples taken in the field.
LED Headlamp – A red LED headlamp (660 ± 15 nm, two intensities, no side bands) provides hands-free illumination in dark rooms or shielded trenches while minimizing unwanted stimulation of TL/OSL signals in quartz and feldspar.

Preparation

Turn bulk material into reproducible aliquots ready for insertion into the Lexsyg carousel.

LED Headlamp – During sieving, density separation, or disc loading, the red headlamp allows operators to see what they are doing while keeping light-sensitive signals intact until intentional bleaching or stimulation is performed.
Sample Cups / Discs – Stainless steel, aluminum, and nickel cups/discs offer different thermal and background properties. Stainless steel supports high-temperature TL/OSL up to 710 °C for standard applications, aluminum provides a lower-cost option up to 500 °C, and nickel cups are optimized for low-background or experimental work.
Aliquot Preparation Kit – The Aliquot Preparation Kit combines silicone oil, a stamping template, storage trays, and a protective case. It standardizes how grains are fixed onto sample discs: trays are loaded with cups, silicone oil is stamped into up to 10 cups at a time, and aliquots are then transferred to Lexsyg discs with consistent spot size and adhesion.

Readout

Measure TL/OSL responses, calibrate sources, and run SAR-based protocols in the Lexsyg.

LED Headlamp – In the measurement room, the red headlamp supports safe movement around the Lexsyg system without adding broad-spectrum background light to open sample trays or exposed aliquots.
Coarse & Fine Grain Source – Pre-irradiated quartz standards (90–160 µm coarse grain, 4–11 µm fine grain) each receive a 3.0 Gy reference dose. They are used to verify and transfer-calibrate beta and X-ray source dose rates via SAR/SARA-style procedures, ensuring consistent response across different Lexsyg systems and campaigns.
Lexsyg Smart / Research – Up to 40 or more automated positions, programmable heating (0.1–20 °C/s up to ~710 °C), and modular OSL units (UV through IR) allow CW-OSL, LM-OSL, and POSL measurements. Integrated beta, alpha, or X-ray sources and interchangeable filters support a full suite of luminescence dating and dosimetry protocols.

Storage

Keep reference and study aliquots organized between calibration, re-measurement, or archiving.

Aliquot Preparation Kit (Trays & Case) – After measurements, the same aliquot trays and storage case that ship with the Aliquot Preparation Kit hold cups or discs in a labeled, dust-protected stack. This simplifies repeat measurements, cross-lab comparisons, and long-term archiving of calibration standards and study aliquots.

The tools shown above form a complete accessory workflow for luminescence laboratories, supporting sampling, preparation, instrument readout, and long-term archival of aliquots. Each component plays a functional role in maintaining measurement quality from the field to the Lexsyg detector itself.

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References

  • Freiberg Instruments Lexsyg Product Documentation
  • Rotunda Scientific Technologies – Product Modules and Accessory Guides
  • Standard OSL/TL laboratory practices for SAR-based dating systems

*AI assistance was used in generating this explainer text.


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