Friedlander-Keller ray expansions in electromagnetism: Monochromatic radiation from arbitrary surfaces in three dimensions
نویسندگان
چکیده
The standard approach to applying ray theory solving Maxwell’s equations in the large wave-number limit involves seeking solutions that have ( i ) an oscillatory exponential with a phase term is linear and ii has amplitude profile expressed terms of inverse powers wave-number. Friedlander–Keller modification includes additional power this wave structure, crucial when analysing certain phenomena such as creeping whispering gallery propagation. However, other necessitate generalisation theory. purposes paper are provide ‘generalised’ ansatz for obtain new set field various structure; these then solved subject boundary data conforming wave-fronts either specified or general. These examples specifically require they not amenable classic
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ژورنال
عنوان ژورنال: European Journal of Applied Mathematics
سال: 2022
ISSN: ['0956-7925', '1469-4425']
DOI: https://doi.org/10.1017/s0956792522000249