A study on isotopic homogenization processes in the early solar system

2016 Fiscal Year Final Research Report

• Project/Area Number: 26400524
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Geochemistry/Cosmochemistry
• Research Institution: The University of Tokyo
• Principal Investigator: Hiyagon Hajime 東京大学, 大学院理学系研究科(理学部), 准教授 (70192292)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: SIMS / ICP-MS / CAI / コンドルール / マグネシウム同位体 / ベリリウム10 / 同位体不均一 / 初期太陽系

Outline of Final Research Achievements

(1) Isotopic studies were conducted on so-called FUN inclusions from Murchison (CM2) and Allende (CV3) chondrites, and their origin and chemical compositions of their precursors were considered. (2) Isotopic analyses of Be-B systematics were conducted for CAIs from CH/CB chondrites using NanoSIMS, and the origin of 10Be was discussed. (3) A high precision Mg isotope analysis technique has been developed using ICP-MS and applied to chondrules from an LL 3.15 chondrite, and possible heterogeneity in the distribution of 26Al (26Al/27Al ratio) in the early solar system was considered.

Free Research Field

惑星科学