Thermoluminescent readers of ionizing radiation detectors

Risø TL/OSL-DA-20 reader

Technical Data:

Manufacturer: Risø DTU National Laboratory
Modes of stimulation: thermal and optical
Thermal stimulation: up to 700°C with a heating rate from 0.1 to 10°C/s
Optical stimulation: LED diods (470 nm, ~ 80 mW/cm2 and 870 nm, ~ 145 mW/cm2)
Detection system: photomultiplier tube EMI 9235QB + optical fiters
Spectral sensitivity: 150 – 600 nm with a maximum at 200 and 350 nm
Sources of ionizing radiation: 90Sr/90Y (activity ~ 1.48 GBq, dose rate (KAIR) ~ 0.063 Gy/s)
241Am (activity ~ 10.7 MBq, fluence of alfa particles ~ 1.68 x 105 x s-1 x cm-2)
Possibility of measurements in an inert gas atmosphere

Application:

The reader is designed for measurements of thermally and optically stimulated luminescence spectra of luminescent materials.




Harshaw TLDTM model 3500

Technical Data:

Manufacturer: Thermo Scientific
Modes of stimulation: thermal (up to 600°C with a heating rate from 1 to 25°C/s)
Detection system: photomultiplier tube ETE 9125B + optical filters
Spectral sensitivity: 270 – 600 nm with a maximum at 350 nm
Possibility of measurements in an inert gas atmosphere

Application:

The reader is designed for measurements of thermally stimulated luminescence spectra of luminescent materials.




RA’94 reader (3 pieces)

Technical Data:

Manufacturer: Mikrolab s.c.
Modes of stimulation: thermal (up to 600°C with a heating rate from 0.11 to 20°C/s)
Detection system: photomultiplier tube ETE 9789QB + optical filters
Spectral sensitivity: 150 – 650 nm with a maximum at 350 nm
Possibility of measurements in an inert gas atmosphere

Application:

The reader is designed for measurements of thermally stimulated luminescence spectra of luminescent materials.




Detailed specification of the readers can be found here:
http://www.sciencedirect.com/science/article/pii/S1350448714001152


HELIOS reader (3 pieces)

Technical Data:

Modes of stimulation: optical (LED diods, 455 – 465 nm)
Detection system: photomultiplier tube + optical filters
Spectral sensitivity: depends on the model (UV or visible range)
Modes of measurements: CW-OSL (HELIOS-1), PL (HELIOS-2), TR-OSL (HELIOS-3)
Sources of ionizing radiation: mini X-rays generator

Application:

The reader is designed for measurements of optically stimulated luminescence spectra of luminescent materials in different modes of sample stimulation and data acquisition.




Devices location:

Department of Radiation Physics and Dosimetry (NZ63)