TY - JOUR
T1 - In situ observations of ions and magnetic field around Phobos
T2 - the mass spectrum analyzer (MSA) for the Martian Moons eXploration (MMX) mission
AU - Yokota, Shoichiro
AU - Terada, Naoki
AU - Matsuoka, Ayako
AU - Murata, Naofumi
AU - Saito, Yoshifumi
AU - Delcourt, Dominique
AU - Futaana, Yoshifumi
AU - Seki, Kanako
AU - Schaible, Micah J.
AU - Asamura, Kazushi
AU - Kasahara, Satoshi
AU - Nakagawa, Hiromu
AU - Nishino, Masaki N.
AU - Nomura, Reiko
AU - Keika, Kunihiro
AU - Harada, Yuki
AU - Imajo, Shun
N1 - Funding Information:
This research was partially supported by a Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (#20K04039, #17H01164, #17H02970).
Funding Information:
The authors would like to express sincere thanks to all members of the MMX mission for their supports. The MSA components are now being manufactured by Meisei Electric Co., Ltd. The ion optics is machined by YS design. The magnetometer sensors are now being manufactured by Tierra Tecnica Ltd.
Publisher Copyright:
© 2021, The Author(s).
PY - 2021/12
Y1 - 2021/12
N2 - The mass spectrum analyzer (MSA) will perform in situ observations of ions and magnetic fields around Phobos as part of the Martian Moons eXploration (MMX) mission to investigate the origin of the Martian moons and physical processes in the Martian environment. MSA consists of an ion energy mass spectrometer and two magnetometers which will measure velocity distribution functions and mass/charge distributions of low-energy ions and magnetic field vectors, respectively. For the MMX scientific objectives, MSA will observe solar wind ions, those scattered at the Phobos surface, water-related ions generated in the predicted Martian gas torus, secondary ions sputtered from Phobos, and escaping ions from the Martian atmosphere, while monitoring the surrounding magnetic field. MSA will be developed from previous instruments for space plasma missions such as Kaguya, Arase, and BepiColombo/Mio to contribute to the MMX scientific objectives. [Figure not available: see fulltext.]
AB - The mass spectrum analyzer (MSA) will perform in situ observations of ions and magnetic fields around Phobos as part of the Martian Moons eXploration (MMX) mission to investigate the origin of the Martian moons and physical processes in the Martian environment. MSA consists of an ion energy mass spectrometer and two magnetometers which will measure velocity distribution functions and mass/charge distributions of low-energy ions and magnetic field vectors, respectively. For the MMX scientific objectives, MSA will observe solar wind ions, those scattered at the Phobos surface, water-related ions generated in the predicted Martian gas torus, secondary ions sputtered from Phobos, and escaping ions from the Martian atmosphere, while monitoring the surrounding magnetic field. MSA will be developed from previous instruments for space plasma missions such as Kaguya, Arase, and BepiColombo/Mio to contribute to the MMX scientific objectives. [Figure not available: see fulltext.]
KW - Magnetometer
KW - Mars
KW - Martian Moons eXploration (MMX)
KW - Mass spectrum analyzer
KW - Phobos
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U2 - 10.1186/s40623-021-01452-x
DO - 10.1186/s40623-021-01452-x
M3 - Article
AN - SCOPUS:85121118948
SN - 1343-8832
VL - 73
JO - Earth, Planets and Space
JF - Earth, Planets and Space
IS - 1
M1 - 216
ER -