Identifying the development in phase and amplitude of dipole and multipole radiation

Rice, EM, Bradshaw, DS, Saadi, K and Andrews, DL (2012) Identifying the development in phase and amplitude of dipole and multipole radiation. European Journal of Physics, 33 (2). pp. 345-358. ISSN 0143-0807

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Abstract

The spatial variation in phase and the propagating wave-front of plane wave electromagnetic radiation are widely familiar text-book territory. In contrast, the developing amplitude and phase of radiation emitted by a dipole or multipole source generally receive less attention, despite the prevalence of these systems. There is additional complexity in such cases where, in consequence of retardation, the character and features significantly and progressively change as radiation propagates onwards, from the near-field and out towards the wave-zone. Readily developed analytical representations of the electric field, cast as a function of distance from the source, provide illuminating insights into the most prominent and distinctive properties of radiant electromagnetic emission. Graphical implementations and animations of the results prove particularly instructive in revealing the spatial form and temporal evolution of the emergent electromagnetic fields.

Item Type: Article
Faculty \ School: Faculty of Science > School of Chemistry
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Depositing User: Users 2731 not found.
Date Deposited: 14 Jan 2013 13:59
Last Modified: 21 Apr 2020 16:27
URI: https://ueaeprints.uea.ac.uk/id/eprint/40728
DOI: 10.1088/0143-0807/33/2/345

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