K
Kari Lumme
Researcher at University of Helsinki
Publications - 76
Citations - 2634
Kari Lumme is an academic researcher from University of Helsinki. The author has contributed to research in topics: Scattering & Light scattering. The author has an hindex of 25, co-authored 76 publications receiving 2504 citations. Previous affiliations of Kari Lumme include VU University Amsterdam.
Papers
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Application of photometric models to asteroids.
TL;DR: In this paper, the brightness of a rough and porous surface is parameterized in terms of the optical properties of individual particles, by shadowing between particles, and by the way in which light is scattered among collections of particles.
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Light scattering by gaussian random particles: ray optics approximation
TL;DR: In this article, the shape of irregular small particles using multivariate lognormal statistics (Gaussian random shape) is modeled by the autocovariance function, which can be conveniently modeled by two statistical parameters: the standard deviation of radius and the correlation length of angular variations.
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Comparison between discrete dipole implementations and exact techniques
Antti Penttilä,Evgenij Zubko,Evgenij Zubko,Kari Lumme,Karri Muinonen,Maxim A. Yurkin,Maxim A. Yurkin,Bruce T. Draine,Jussi Rahola,Alfons G. Hoekstra,Yuri Shkuratov +10 more
TL;DR: The accuracy of the discrete dipole approximation method in wave optical scattering simulations is studied by comparing the DDA results against results from either Mie, T-matrix or cluster T-Matrix codes with suitable geometries.
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A Critical review of theoretical models of negatively polarized light scattered by atmosphereless solar system bodies
Yu. G. Shkuratov,Karri Muinonen,Edward Bowell,Kari Lumme,Jouni Peltoniemi,Mikhail A. Kreslavsky,D. G. Stankevich,V. P. Tishkovetz,N. V. Opanasenko,L. Y. Melkumova +9 more
TL;DR: In this article, the phase-angle dependence of the degree of polarization observed at small phase angles has been analyzed and it was shown that interference or coherent backscattering mechanism is the most promising model.
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Light scattering by randomly oriented crystals.
TL;DR: The scattering phase function and the degree of linear polarization for small crystals oriented randomly in space have been computed using the geometric ray tracing theory and assuming that the crystals are homogeneous and isotropic.