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Phase ratio in single-scattering dust particles: Implication to future DESTINY+ study of asteroid (3200) Phaethon

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Title
Phase ratio in single-scattering dust particles: Implication to future DESTINY+ study of asteroid (3200) Phaethon
Author(s)
Evgenij Zubko; Wada, Koji
Publication Date
2023-11
Journal
Icarus, v.404
Publisher
Academic Press Inc.
Abstract
The phase ratio is defined as a ratio of reflectivity of object at two different phase angles α. This light-scattering characteristic has revealed high sensitivity to physical parameters of a planetary regolith. We investigate the phase ratio of single-scattering irregularly shaped particles with different morphology by means of the discrete dipole approximation. The phase ratio defined at α = 0° and 30° appears to be highly sensitive to the imaginary part of refractive index and less sensitive to the size distribution of target particles; whereas, it is not sensitive to their real part of refractive index and irregular morphology when it attains a high level of disorder. Further, the phase ratio defined at α = 30° and 60° is almost fully insensitive to microphysics of target particles. This feature might help to enhance the scientific return from the future DESTINY+ mission to asteroid (3200) Phaethon. © 2023 Elsevier Inc.
URI
https://pr.ibs.re.kr/handle/8788114/14664
DOI
10.1016/j.icarus.2023.115652
ISSN
0019-1035
Appears in Collections:
Pioneer Research Center for Climate and Earth Science(기후 및 지구과학 연구단) > Planetary Atmospheres Group(행성 대기 그룹) > 1. Journal Papers (저널논문)
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