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Fig. 6

Polarization cross-section per unit volume of the corresponding sphere, λ Cpol ∕V, as a functionof wavelength, for spheroidal grains of equivalent radius aV = 0.2 μm. Results are shown in black for prolate grains, and in red for oblate grains, for an elongation of 3 (solid) and 1.5 (dashed).
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