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QNMs of the circularly faceted spherical NPoM geometry, ordered in increasing energy: (1,0), (1,1), (1,1), (2,2), (2,2), (2,0), (3,3), (3,3). A. Normalised QNM electric fields Ez,lm in the xy-plane through the centre of the cavity. B. Time averaged far-field Poynting flux 〈Slm〉.
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