With Cathodoluminescence you can achieve the same information as with an Electron Microscope but at a fraction of the cost and time, as no special preparation is required.
- The MK5 model extends the facilities of the earlier CL8200 MK4 model, while retaining the time proven, fully automatic operation
- Smaller footprint
- Micro-controller together with large alphanumeric display (Provides additional information on the operation and status of the unit)
- Automatic display brightness compensation for room illumination
- Research considerations include removing gun voltage while continuing pumping and providing the operating conditions to an external PC
- Software is continually being enhanced for effectiveness and usability
- Stage movement viewing area – 70mm x 50mm
- Sample thickness up to 15mm
- Base window for transmitted light microscopy for standard polished geological sections.
- Vacuum manifold with automatic precision vacuum control valve, solid-state pressure gauge, automatic vent valve.
- KF direct connection for vacuum pump.
Chamber Top Plate (Incorporating Electron Gun)
Choice of TP5 or TP9 top plate included in standard unit.
TP5 with 5mm WD for objectives with 2.5 X and above magnification.
TP9, larger window top plate with 9 mm WD for objectives from 1 X and above.
(either Top Plate available as an additional item).
- Gun Supply – 4kV to 30kV and 20μA to 2mA. Gun current , voltage electronic/vacuum stabilised.
- Controls – pre-select gun voltage, gun current values.
- Switch select- insert sample, operate mode: automatic or manual, gun voltage on/off
- Alpha numeric display- gun voltage, gun current, vacuum, operating mode and state, diagnostics for all internal power supplies, control values.
- PC interface- RS 232
- Preset controls- gun power, voltage limit, current limit, display auto brightness.
- Indicators- vacuum pump, vacuum ready, kV on, gun supply limits, vacuum control valve operation.
- Gun safety- interlock to vacuum, external link present.
- Options- two auxiliary power supplies.
Precision automatic control valve, automatic vent valve. Input port air, helium, argon or other gas.
– vent. Interlock to high voltage.
A cathodoluminescence (CL) microscope combines methods from electron and regular (light optical) microscopes. It is designed to study the luminescence characteristics of polished thin sections of solids irradiated by an electron beam.
Using a cathodoluminescence microscope, structures within crystals or fabrics can be made visible which cannot be seen in normal light conditions. Thus, for example, valuable information on the growth of minerals can be obtained. CL-microscopy is used in geology, mineralogy and materials science (rocks, minerals, volcanic ash, glass, ceramic, concrete, fly ash, etc.).
CL systems can also be attached to a scanning electron microscope. These devices are expensive and are traditionally used for special applications like e.g. investigations in materials sciences or quality determination of ceramics. The most prominent advantage is their higher magnifications. However, CL colour information can only be obtained by a spectroscopic analysis of the Luminescence emission.