Japan Geoscience Union Meeting 2019

Presentation information

[J] Poster

M (Multidisciplinary and Interdisciplinary) » M-TT Technology & Techniques

[M-TT48] Frontiers in Geochemistry

Sun. May 26, 2019 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

convener:Hirochika Sumino(Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo), Tetsuya Yokoyama(Department of Earth and Planetary Sciences, School of Science, Tokyo Institute of Technology), Hajime Obata(Marine inorganic chemistry division, Atmosphere and Ocean Research Institute, University of Tokyo)

[MTT48-P10] Non-destructive elemental analysis of a carbonaceous chondrite with direct current Muon beam at MuSIC

*Murota Yuta1, Kentaro Terada1 (1.Department of Earth and Space Science, Graduate School of Science, Osaka University)

Keywords:muon, non-destructive elemental analysis, Hayabusa2

Electron- or X-ray-induced characteristic X-ray analysis has been widely used to determine chemical
compositions of materials in vast research fields. In recent years, analysis of characteristic X-rays from
muonic atoms, in which a muon is captured, has attracted attention because both a muon beam and
a muon-induced characteristic X-ray have high transmission abilities. Here we report the first nondestructive elemental analysis of a carbonaceous chondrite using one of the world-leading intense direct current muon beam source (MuSIC; MUon Science Innovative Channel). We successfully detected
characteristic muonic X-rays of Mg, Si, Fe, O, S and C from Cl chondrite, of which carbon content is about 3 wt%. Because of its high sensitivity to carbon, non-destructive elemental analysis with a muon beam can be a novel powerful tool to characterize future retuned samples from carbonaceous asteroids.