Product category:
Stand-Alone Instruments
News Release from: Hitachi High-Technologies (Electron Microscopy) | Subject: S-5200 FESEM
Edited by the Electronicstalk Editorial
Team on 16 April 2002
Additional detector brings enhanced
imaging
The ultra-high-resolution in-lens S-5200 FESEM from Hitachi High-Technologies has been enhanced with an optional electron detector for imaging backscattered electrons at low accelerating voltages.
The imaging versatility of the ultra-high resolution in-lens S-5200 FESEM from Hitachi High-Technologies Corporation has been enhanced with an optional electron detector for imaging backscattered electrons at low accelerating voltages This new accessory takes full advantage of the outstanding resolution of the S-5200 of 1.8nm at 1kV
This article was originally published on Electronicstalk on 28 Jan 2002 at 8.00am (UK)
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SEM gets a better image
Hitachi High-Technologies has made a number of improvements to its S-4700 field emission SEM, which give significantly better image quality, particularly at low accelerating voltages.
High-resolution FESEM for large samples
A new FESEM combines the resolution capabilities normally associated with in-lens instruments with the sample handling of more conventional FESEMs.
Backscattered electrons give valuable elemental composition information in an image, since contrast is dependent on the average atomic number of the material being imaged.
Previously, it has only been possible to obtain backscattered compositional images using accelerating voltages in excess of around 5kV.
This new arrangement allows compositional information to be acquired at accelerating voltages as low as 500V, reducing the chances of specimen charging or sample damage and giving increased surface sensitivity and information.
The additional detector can be used an alternative to a conventional YAG backscattered electron detector and is fitted above Hitachi's proprietary EXB electron detection system.
It is used in conjunction with a conversion plate which converts high angle backscattered electrons into secondary electrons for collection.
This upper detector produces images using only high angle backscattered electrons.
The S-5200's standard detection system, will allow detection of secondary electrons or, by adjusting the detection system operating conditions, mixtures of secondary electrons and low angle backscattered electrons.
Signals from both detectors can be mixed to give a wide variety electron contributions to obtain the optimum balance between compositional and topographic detail in the image.
(This was Electronicstalk's Top Story on 15 April 2002).
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