Freiberg
Instruments
GmbH
ּ Am St. Niclas Schacht 13 ּ 09599 Freiberg – Germany
19 / 78
recommended for dating techniques where the alpha-component has to be
determined (e.g. fine-grain, flint)
Radioisotope: Am-241
vacuum irradiation, fully software controlled
includes shutter unit (minimum open/close cycle time 0.5 s)
easy and safe service for regular wipe-test
permission for handling irradiator must be sent to manufacturer at time of ordering
2.1.4.
Module 3: Heating unit
Thermoluminescence (TL), preheat (PH) of materials or elevated temperature measurements
(e.g. standard Quartz SAR-protocol) need a heater. LEXSYG luminescence readers can
also use this unit for elevated temperature irradiation (at ionizing irradiation and “solar-light”
position) and measurements (elevated temperature RL). Measurements are possible during
any part of a heating/cooling cycle, which may simply be a heating ramp but also consist of a
series of different steps. An extended software version (see software options section 12.)
includes further possibilities, e.g. programmable cooling and non-linear heating/cooling
functions.
temperature: room temperature (RT) to 700 deg. Celsius (higher temp. on request)
heating rate: 0.1
– 10.0 K/s (@ T
max
= 500 °C; 0.1-5.0 K/s (@ T
max
= 700 °C higher
heating rates on request
highly flexible step-wise programming of heating cooling cycles within system
parameters (i.e. temperature and heating/cooling rates)
Software options for further temperature control (e.g. non-linear functions, see 12.)
2.1.5.
Module 4.1/4.2/4.3: Green/IR/blue excitation
lexsyg
instruments can be equipped with an fiber-optics based OSL stimulation unit which
allows the independent, parallel use of up to 3 different IR, VIS or UV lasers for highly
