We have conducted numerical studies on interference of the - and higher-order rainbows (, 9, 10, and 11) formed by a spherical water drop based on Mie scattering theory. Wavelengths studied include 632.8, 532, 514.5, and . Our results are compared with the “non-Debye enhancement” of the -order rainbow reported by Lock and Woodruff [Appl. Opt. 28, 523 (1989)] .
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