Multiple scattering simulation of electron channelling contrast images of dislocations at interfaces
Quantum-mechanical multiple scattering theory of electron backscattering from crystalline materials is applied to simulate channelling images of dislocations situated near the surface of a crystal. A computational algorithm is developed which uses perturbation expansion of the solution of an inhomog...
| Huvudupphovsmän: | , , , , |
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| Materialtyp: | Conference item |
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1995
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| _version_ | 1826292518751305728 |
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| author | Dudarev, S Czernuszka, J Peng, L Wilkinson, A Whelan, M |
| author_facet | Dudarev, S Czernuszka, J Peng, L Wilkinson, A Whelan, M |
| author_sort | Dudarev, S |
| collection | OXFORD |
| description | Quantum-mechanical multiple scattering theory of electron backscattering from crystalline materials is applied to simulate channelling images of dislocations situated near the surface of a crystal. A computational algorithm is developed which uses perturbation expansion of the solution of an inhomogeneous transport equation and which makes it possible to generate two-dimensional images of dislocations for various orientations of the Burgers vector. We compare the images simulated numerically with the results of experimental observations performed at inclined incidence using a conventional SEM and recently developed detector of backscattered electrons. The origin of the oscillations of the image intensity is discussed. |
| first_indexed | 2024-03-07T03:15:56Z |
| format | Conference item |
| id | oxford-uuid:b5c52c82-e3bb-4284-aab4-4e6e3370a0a9 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T03:15:56Z |
| publishDate | 1995 |
| record_format | dspace |
| spelling | oxford-uuid:b5c52c82-e3bb-4284-aab4-4e6e3370a0a92022-03-27T04:36:06ZMultiple scattering simulation of electron channelling contrast images of dislocations at interfacesConference itemhttp://purl.org/coar/resource_type/c_5794uuid:b5c52c82-e3bb-4284-aab4-4e6e3370a0a9Symplectic Elements at Oxford1995Dudarev, SCzernuszka, JPeng, LWilkinson, AWhelan, MQuantum-mechanical multiple scattering theory of electron backscattering from crystalline materials is applied to simulate channelling images of dislocations situated near the surface of a crystal. A computational algorithm is developed which uses perturbation expansion of the solution of an inhomogeneous transport equation and which makes it possible to generate two-dimensional images of dislocations for various orientations of the Burgers vector. We compare the images simulated numerically with the results of experimental observations performed at inclined incidence using a conventional SEM and recently developed detector of backscattered electrons. The origin of the oscillations of the image intensity is discussed. |
| spellingShingle | Dudarev, S Czernuszka, J Peng, L Wilkinson, A Whelan, M Multiple scattering simulation of electron channelling contrast images of dislocations at interfaces |
| title | Multiple scattering simulation of electron channelling contrast images of dislocations at interfaces |
| title_full | Multiple scattering simulation of electron channelling contrast images of dislocations at interfaces |
| title_fullStr | Multiple scattering simulation of electron channelling contrast images of dislocations at interfaces |
| title_full_unstemmed | Multiple scattering simulation of electron channelling contrast images of dislocations at interfaces |
| title_short | Multiple scattering simulation of electron channelling contrast images of dislocations at interfaces |
| title_sort | multiple scattering simulation of electron channelling contrast images of dislocations at interfaces |
| work_keys_str_mv | AT dudarevs multiplescatteringsimulationofelectronchannellingcontrastimagesofdislocationsatinterfaces AT czernuszkaj multiplescatteringsimulationofelectronchannellingcontrastimagesofdislocationsatinterfaces AT pengl multiplescatteringsimulationofelectronchannellingcontrastimagesofdislocationsatinterfaces AT wilkinsona multiplescatteringsimulationofelectronchannellingcontrastimagesofdislocationsatinterfaces AT whelanm multiplescatteringsimulationofelectronchannellingcontrastimagesofdislocationsatinterfaces |