Zeiss GeminiSEM Series Instruction Manual

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3 Product and Functional Description | 3.3 Optional Components and Accessories ZEISS5 SpecimenFunction The prerequisite for using this detector is that the specimen emits light when interacting with theprimary electron beam. Differences in crystal structure or the presence of impurities in a cathodo-luminescent material result in variations in the energy gap between the filled valence bands andthe empty conduction bands, and consequently a change in the CL emission.The light (photons) emitted by the specimen is collected by the CL detector and converted into asignal for imaging.The CL detector is fully integrated into the automatic brightness and contrast control of the micro-scope and can be used simultaneously with any of the detectors without degrading their perfor-mance.The detector can be used during energy-dispersive X-ray spectrometer (EDS) measurements andwavelength-dispersive spectrometer (WDS) measurements at any valid magnification.Fig. 38: CL image of sandstone3.3.2 Control PanelPurpose The control panel allows direct access to 14 of the most frequently used functions. It integrates afull sized keyboard, 11 turning knobs, and 8 push buttons.Position The control panel is placed on the work desk.1 2 36 7 84 511109Fig. 39: Control panel60 Instruction Manual ZEISS GeminiSEM series | en-US | Rev. 2 | 349500-8138-000