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Modelling of positively charged aerosols in the polar summer mesopause region

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Figure

Fig. 1.Photoemission rates per wavelength (thin lines) of a single aerosol particle as a function of wavelength assuming that the particle has a radiusof 50 nm
Fig. 2.Aerosol charge distribution assuming that the particles consist of sodium. While small particles (e.g., r = 2 nm) are negatively charged, largeparticles accumulate a net positive charge
Fig. 3. Radial dependences of Mie cross sections for absorption, scattering, and extinction as a function of particle radius for a wavelength of 370 nm.For particles smaller than ∼10 nm the absorption cross section is proportional to the volume of the part
Table 2.Work functions and maximum positive charge ¯qmax of variousmetals relevant for the mesopause region
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