JpGU-AGU Joint Meeting 2017

Presentation information

[JJ] Poster

P (Space and Planetary Sciences) » P-PS Planetary Sciences

[P-PS09] [JJ] Origin and evolution of materials in space

Mon. May 22, 2017 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL7)

[PPS09-P05] Isotopic Analysis of Presolar SiC Grains with the Post-Ionization SNMS

*Kohei Miya1, Kentaro Terada1, Hikaru Yabuta2, Yosuke Kawai1, Takahiro Matsuda1, Michisato Toyoda1, Jun Aoki1, Morio Ishihara1, Ryosuke Nakamura3 (1.Graduate School of Science, Osaka University, 2.Graduate School of Science, Hiroshima University, 3.Office for University-Industry Collaboration, Osaka University)

Keywords:Stellar Evolution, Presolar Grain, Isotopic Analysis

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.