Diffractive triangulation of radiative point sources

Vespucci, S., Naresh-Kumar, G., Trager-Cowan, C., Mingard, K.P., Maneuski, D., O'Shea, V. and Winkelmann, A. (2017) Diffractive triangulation of radiative point sources. Applied Physics Letters, 110(12), 124103. (doi: 10.1063/1.4978858)

Abstract

We describe a general method to determine the location of a point source of waves relative to a twodimensional single-crystalline active pixel detector. Based on the inherent structural sensitivity of crystalline sensor materials, characteristic detector diffraction patterns can be used to triangulate the location of a wave emitter. The principle described here can be applied to various types of waves, provided that the detector elements are suitably structured. As a prototypical practical application of the general detection principle, a digital hybrid pixel detector is used to localize a source of electrons for Kikuchi diffraction pattern measurements in the scanning electron microscope. This approach provides a promising alternative method to calibrate Kikuchi patterns for accurate measurements of microstructural crystal orientations, strains, and phase distributions.

• Item Type: Articles
• Additional Information: . This work was carried out with the support from EPSRC Grant No. EP/ J015792/1 and through support from a Carnegie Trust Research Incentive Grant No. 70483.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Maneuski, Dr Dima and O'Shea, Professor Val
• Authors: Vespucci, S., Naresh-Kumar, G., Trager-Cowan, C., Mingard, K.P., Maneuski, D., O'Shea, V., and Winkelmann, A.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Applied Physics Letters
• Publisher: AIP Publishing
• ISSN: 0003-6951
• ISSN (Online): 1077-3118
• Published Online: 24 March 2017
• Copyright Holders: Copyright © 2017 The Authors
• First Published: First published in Applied Physics Letters 110(12):124103
• Publisher Policy: Reproduced under a Creative Commons License