Japan Geoscience Union Meeting 2019

Presentation information

[E] Oral

P (Space and Planetary Sciences ) » P-CG Complex & General

[P-CG21] Future Missions and instrumentation for space and planetary science

Sun. May 26, 2019 9:00 AM - 10:30 AM A01 (TOKYO BAY MAKUHARI HALL)

convener:Mitsunori Ozaki(Faculty of Electrical and Computer Engineering, Institute of Science and Engineering, Kanazawa University), Satoshi Kasahara(The university of Tokyo), Shingo Kameda(School of Science, Rikkyo University), Kazuo Yoshioka(Graduate School of frontier Science, The University of Tokyo), Chairperson:Kazuo Yoshioka(The University of Tokyo), Mitsunori Ozaki(Kanazawa University)

9:35 AM - 9:50 AM

[PCG21-03] Development of Orbitrap Mass Spectrometer for in-situ measurements in solar system explorations

*Oya Kawashima1, Satoshi Kasahara1, Yoshifumi Saito4, Shoichiro Yokota2, Masafumi Hirahara3, Seiji Sugita1 (1.The university of tokyo, 2.Osaka University, 3.Nagoya University, 4.ISAS / JAXA)

Keywords:Mass Spectrometer, High Mass Resolution, Orbitrap

Previous mass spectrometry in solar system explorations has advanced our knowledge and understanding on the formation and evolution of planets, as well as the dynamics of space environment surrounding planets, moons, and other small bodies. Nonetheless, there are many important topics remaining to be addressed by higher-resolution mass spectrometry. Here we report our design of Orbitrap, which is a kind of Fourier-transform mass spectrometer, showing high mass resolution (m/dm ~ 10000) based on numerical simulations. We propose a simple and miniaturized ion storage unit in front of the multi-reflectron region, utilizing the potential drop by the electron beam for ionization. Such a high-resolution mass spectrometer will provide significant information on elemental and isotopic compositions in, on, and around planets and other solar system objects. For instance, discrimination between N2(28.0062 u) and CO(27.9949 u) in the Martian atmosphere, which is essential for discussing atmospheric escape in the present and past, will be enabled.