eFlash FS

The Fast and Sensitive EBSD Detector

The EBSD detector eFlash FS has been designed for maximum sensitivity to allow highspeed EBSD measurements without compromising data quality – even on challenging applications like deformed or lightweight materials. To further improve the pattern quality, the cooling system of the eFlash FS has been upgraded to lower its functioning temperature and therefore reduce the dark current of the CCD camera as much as possible.

Thanks to a sensitivity improvement on previous detector generations by a factor of three and a dark current drop by a factor of four the eFlash FS detector is the best choice for all “Hough based” EBSD applications. The huge camera sensitivity improvement combined with a high speed and high efficiency phosphor screen makes the eFlash FS detector the ideal solution for dynamic experiments like in-situ heating and in-situ tensile/ compression testing.

3D EBSD is another important application that will greatly benefit from the speed and sensitivity capabilities of the new eFlash FS detector.

The acquisition of a 400 x 300 pixels map/ slice will now be ready in as quickly as ~2 min 10 s. This means that the data acquisition part of a 70 slices 3D EBSD data cube (8.4 M voxels) will require only ~2.5 hours.

Its excellent sensitivity makes the eFlash FS detector the perfect solution for low kV EBSD applications as well as Transmission Kikuchi Diffraction (TKD) in the SEM known as transmission EBSD (t-EBSD). Orientation mapping in transmission mode using the new detector retrofitted with the unique OPTIMUS™ 2 TKD detector head is now possible at speeds of up to 630 frames per second (fps) while achieving an effective spatial resolution of at least 2 nm.

With typical measurement times of just a few minutes per map, on-axis TKD not only brings a remarkable increase in efficiency without affecting data quality but it also minimizes artifacts induced by beam instability.

The eFlash FS is available with ARGUS™ forescattered/ backscattered electron imaging system. This further increases the versatility of the detector and provides valuable additional information for meaningful and efficient microstructure characterization.


The eFlash FS EBSD systems with and without the OPTIMUS 2 head for on-axis TKD analysis