Doctor of Science

No

Planetary Material Science

00years00months

Meteorites and cosmic dusts are sutdied in respects of petrological/mineralogical features and chemical/isotopical compositions. The goal of the studies is to understand the origin and evolution history of the solar system materials.

Research Interests

• Recovery of the re-entry capsule of the Hayabusa2 spacecraft.
  keyword : Hayabusa2
  2018.04～2021.03.
• Initial analysis of the Hayabusa2 return sample
  keyword : Hayabusa2
  2019.04～2022.06.
• Pu-Xe isochron dating for eucrties
  keyword : eucrite, isochoron, Pu-Xe
  2017.10～2019.09.
• Space weathering on the surface of asteroids
  keyword : space weathering, noble gas, Hayabusa, asteroid, regolith
  2012.04～2017.03.
• Development of Hayabusa-2
  keyword : Hayabusa-2
  2010.09～2014.03.
• Noble gas analysis for an asteroid sample from Itokawa
  keyword : Hayabusa, Itokawa, asteroid, noble gas, solar system
  2010.08～2013.03.
• Pre-compaction ages for Ca-Al-rich refractory inclusions (CAIs) in chondrites
  keyword : CAIs, pre-compaction age, solar nebula
  2011.04～2014.03.
• Interaction between minerals, water, and organic materials in the early solar system.
  keyword : minerals, water, organic materials, the early solar system.
  2010.04～2014.03.
• A study on the chemical fractionation in the solar nebula based on chemistry, mineralogy, and isotopic compositions of the chondrite matrix.
  keyword : chondrite, matrix, chemical fractionation, solar nebula
  2007.04Chondrites are primitive meteorites and classified into several groups based on their mineralogy and chemistry. In order to deduce the origin of the diversity of chondrites, fine-grained matrix consisiting of the most primitive material aggregates have been investigated..
• Chemistry, mineralogy, and isotopic characteristics of crystalline Antarctic micrometeorites.
  keyword : micrometeorites, comet, asteroids, meteorites, crystalline, noble gas, oxygen, rare earth elements
  2006.04～2008.05Micrometeorites are the major part of dust particles falling on the Earth. Coarse-grained micrometeorites consist of crystalline olivine, pyroxene, metal and suldfides. Their origin could be asteroidal and cometary. In order to understand the origin and evolution history of primitive materials in the solar system, mineralogy, chemistry, and isotope compositions of coarse-grained micrometeorites have been investigated..
• Origin and history of the reduced material in the solar nebula
  keyword : solar nebula, reduced material, enstatite chondrites, noble gas, oxygen, rare earth elements
  2001.04～2006.12The origin and evolution history of the reduced materials in the solar system is not well understood. Investigated are highly reduced meteorites, enstatite chondrites, in respects of petrology, mineralogy, noble gas isotopes, oyxgen isotopes, and rare earth element abundances..

Academic Activities Membership in Academic Society

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