[P-PS09] [JJ] 宇宙における物質の形成と進化

[PPS09-P05] MULTUM-SNMSを用いたMurchison SiCの同位体分析

*宮 晃平¹、寺田 健太郎¹、薮田 ひかる²、河井 洋輔¹、松田 貴博¹、豊田 岐聡¹、青木 順¹、石原 盛男¹、中村 亮介³ (1.大阪大学大学院理学研究科、2.広島大学大学院理学研究科、3.大阪大学産学連携本部)

キーワード：恒星進化、プレソーラー粒子、同位体分析

For unveiling nucleosynthesis during stellar evolution, in-situ isotopic analyses of individual presolar grains have played important roles. So far, we have been developing a new mass spectrometer, Secondary Neutrals Mass Spectrometer (SNMS) with a femto-second laser, in order to enable further sensitive and higher mass/spatial-resolution measurements. At the conference, we' ll report our recent progress of development of SNMS and application to the analysis of SiC grains collected from Murchison meteorite. As preliminary results, we detected isotopic anomalies of major elements (Si and C), which is consistent with those of previous works. We will also refer the challenging isotopic measurements of other minor elements.