INTERNATIONAL JOURNAL OF THERMOPHYSICS 43(6) 2022年6月
The thermal conductivity of planetary soils, or regolith, is essential for understanding the present global thermal state of bodies. The thermal conductivity of lunar soils is important with respect to lunar crustal heat flow. Although in situ mea...
N. Sakatani S. Tanaka T. Okada T. Fukuhara L. Riu S. Sugita R. Honda T. Morota S. Kameda Y. Yokota E. Tatsumi K. Yumoto N. Hirata A. Miura T. Kouyama H. Senshu Y. Shimaki T. Arai J. Takita H. Demura T. Sekiguchi T. G. Müller A. Hagermann J. Biele M. Grott M. Hamm M. Delbo W. Neumann M. Taguchi Y. Ogawa T. Matsunaga T. Wada S. Hasegawa J. Helbert N. Hirata R. Noguchi M. Yamada H. Suzuki C. Honda K. Ogawa M. Hayakawa K. Yoshioka M. Matsuoka Y. Cho H. Sawada K. Kitazato T. Iwata M. Abe M. Ohtake S. Matsuura K. Matsumoto H. Noda Y. Ishihara K. Yamamoto A. Higuchi N. Namiki G. Ono T. Saiki H. Imamura Y. Takagi H. Yano K. Shirai C. Okamoto S. Nakazawa Y. Iijima M. Arakawa K. Wada T. Kadono K. Ishibashi F. Terui S. Kikuchi T. Yamaguchi N. Ogawa Y. Mimasu K. Yoshikawa T. Takahashi Y. Takei A. Fujii H. Takeuchi Y. Yamamoto C. Hirose S. Hosoda O. Mori T. Shimada S. Soldini R. Tsukizaki M. Ozaki S. Tachibana H. Ikeda M. Ishiguro H. Yabuta M. Yoshikawa S. Watanabe Y. Tsuda
Nature Astronomy 5(8) 766-774 2021年8月
Planetesimals—the initial stage of the planetary formation process—are considered to be initially very porous aggregates of dusts1,2, and subsequent thermal and compaction processes reduce their porosity3. The Hayabusa2 spacecraft found that bould...
Many air-less planetary bodies, including the Moon, asteroids, and comets, are covered by regolith. The thermal conductivity of the regolith is an essential parameter controlling the surface temperature variation. A thermal conductivity model appl...
N. Sakatani K. Ogawa Y. Iijima M. Arakawa R. Honda S. Tanaka
AIP Advances 7(1) 2017年1月
The thermal conductivity of powdered media is characteristically very low in vacuum, and is effectively dependent on many parameters of their constituent particles and packing structure. Understanding of the heat transfer mechanism within powder l...
Thermal conductivity of powdered materials under vacuum conditions is a valuable physical parameter in the context of planetary sciences. We report results of thermal conductivity measurements of 90-106 mu m and 710-1000 mu m glass beads, and luna...
Europlanet Science Congress 2020 EPSC2020-12 2020年10月 [招待有り]
<p>Thermal imaging, or thermography, has revealed the surface physical state of the C-type near-Earth asteroid 162173 Ryugu (Okada et al., 2020). The asteroid is the target body of JAXA Hayabsua2 asteroid sample return mission, and i...
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