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Abstract

A method for the direct measurement of electron diffraction patterns in a Philips EM400T transmission electron microscope is described. Use is made of the diffraction lens shift-tilt coils to being any desired diffraction spot to the centre of the screen. By monitoring the voltage applied to the coils, the position of diffraction spot can be determined. After calibration d values and angles between the diffraction spots can be calculated without the need of a photographic recording. Advantages of the method are high speed, combined with accuracy. The conversion of the microscope and the calibration procedure are described and illustrated with some experimental results.

Additional information

Authors: TAMBUYSER P JRC PETTEN ESTAB., JRC PETTEN ESTAB.
Bibliographic Reference: JOURNAL OF PHYSICS E: SCIENTIFIC INSTRUMENTS, VOL. 16 (1983), PP. 483-486
Record Number: 1989122002200 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en
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