Direct image obtained with a Mercury UV lamp
As a microscope technique, PEEM can be used in a wide range of applications. Because each investigation requires a slightly different technical configuration, the STAIB-PEEM-350 is designed as a flexible, modular system. The instrument offers maximum capabilities for microscopy, energy filtering, and microanalysis, while remaining very compact and extremely stable mechanically. For instance, the detector part, a large chevron channel plate with fiber optic coupling, is fully integrated into the optical column, allowing highest spatial resolution capability even with the PEEM mounted in complex environmental conditions. Should vibration of the whole system be a limiting factor for the resolution, an integrated sample holder can be incorporated.
Energy filtered image using the IEF
The stigmatic beam switch unit is also fully integrated for maximum stability. The stigmatic beam switch provides an accurate adjustment of the selected microscopic area. Only electronic switching, without mechanical adjustment, is needed. The optical column is precisely assembled so that no further time consuming mechanical adjustment of the diaphragm is required. All fine adjustments of the system are controlled by the electronics, keeping set up time to a minimum, even for inexperienced users. Furthermore, the PEEM Computer Control and Data Acquisition system automates all major operations in a user friendly manner, ideally suited for operation by different operators.
The stable and compact design of the PEEM Microanalyzer allows many custom specific modifications for special, more sophisticated, investigations. The STAIB Instruments team technically supports these modifications. Examples of customized implementations of the basic PEEM-350 design include implementing coaxial ion beam excitation (patented design), adding special detectors for time-of-flight analyses, incorporating a spin sensitive detector, building a special sample holder for in situ device testing.
Energy distribution measured with the IEF