title: A new X-ray fluorescence spectroscopy for extraterrestrial materials using a muon beam.
abstract: The recent development of the intense pulsed muon source at J-PARC MUSE, Japan Proton Accelerator Research Complex/MUon Science Establishment (10(6) s(-1) for a momentum of 60 MeV/c), enabled us to pioneer a new frontier in analytical sciences. Here, we report a non-destructive elemental analysis using µ(-) capture. Controlling muon momentum from 32.5 to 57.5 MeV/c, we successfully demonstrate a depth-profile analysis of light elements (B, C, N, and O) from several mm-thick layered materials and non-destructive bulk analyses of meteorites containing organic materials. Muon beam analysis, enabling a bulk analysis of light to heavy elements without severe radioactivation, is a unique analytical method complementary to other non-destructive analyses. Furthermore, this technology can be used as a powerful tool to identify the content and distribution of organic components in future asteroidal return samples.
authors.affiliation: Graduate School of Science, Osaka University.
authors.forename: K
authors.initials: K
authors.lastname: Terada
authors.affiliation: Graduate School of Science, Osaka University.
authors.forename: K
authors.initials: K
authors.lastname: Ninomiya
authors.affiliation: Quantum Beam Science Directorate, Japan Atomic Energy Agency.
authors.forename: T
authors.initials: T
authors.lastname: Osawa
authors.affiliation: Graduate School of Science, Hokkaido University.
authors.forename: S
authors.initials: S
authors.lastname: Tachibana
authors.affiliation: 1] Muon Science Section, Materials and Life Science Division, J-PARC Center [2] Muon Science Laboratory, IMSS, High Energy Accelerator Research Organization.
authors.forename: Y
authors.initials: Y
authors.lastname: Miyake
authors.affiliation: Graduate School of Science, International Christian University.
authors.forename: M K
authors.initials: MK
authors.lastname: Kubo
authors.affiliation: 1] Muon Science Section, Materials and Life Science Division, J-PARC Center [2] Muon Science Laboratory, IMSS, High Energy Accelerator Research Organization.
authors.forename: N
authors.initials: N
authors.lastname: Kawamura
authors.affiliation: Advanced Science Research Center, Japan Atomic Energy Agency.
authors.forename: W
authors.initials: W
authors.lastname: Higemoto
authors.affiliation: Graduate School of Science, Kyoto University.
authors.forename: A
authors.initials: A
authors.lastname: Tsuchiyama
authors.affiliation: Graduate School of Science and Engineering, Tokyo Metropolitan University.
authors.forename: M
authors.initials: M
authors.lastname: Ebihara
authors.affiliation: JAXA Space Exploration Center, Japan Aerospace Exploration Agency.
authors.forename: M
authors.initials: M
authors.lastname: Uesugi