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Journal Articles Experimental Astronomy Year : 2022

Plasma-neutral gas interactions in various space environments: Assessment beyond simplified approximations as a Voyage 2050 theme

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Masatoshi Yamauchi
  • Function : Author
Johan de Keyser
  • Function : Author
George Parks
  • Function : Author
Shin-Ichiro Oyama
  • Function : Author
Peter Wurz
  • Function : Author
Takumi Abe
  • Function : Author
Arnaud Beth
  • Function : Author
Ioannis A. Daglis
  • Function : Author
Malcolm Dunlop
  • Function : Author
Nickolay Ivchenko
  • Function : Author
Esa Kallio
  • Function : Author
Harald Kucharek
  • Function : Author
Yong C. -M. Liu
  • Function : Author
Ingrid Mann
  • Function : Author
Octav Marghitu
  • Function : Author
Georgios Nicolaou
  • Function : Author
Zhaojin Rong
  • Function : Author
Takeshi Sakanoi
Joachim Saur
  • Function : Author
Manabu Shimoyama
  • Function : Author
Satoshi Taguchi
  • Function : Author
Feng Tian
  • Function : Author
Takuo Tsuda
  • Function : Author
Bruce Tsurutani
  • Function : Author
Drew Turner
  • Function : Author
Thomas Ulich
  • Function : Author
Andrew Yau
  • Function : Author
Ichiro Yoshikawa

Abstract

In the White Paper, submitted in response to the European Space Agency (ESA) Voyage 2050 Call, we present the importance of advancing our knowledge of plasma-neutral gas interactions, and of deepening our understanding of the partially ionized environments that are ubiquitous in the upper atmospheres of planets and moons, and elsewhere in space. In future space missions, the above task requires addressing the following fundamental questions: (A) How and by how much do plasma-neutral gas interactions influence the re-distribution of externally provided energy to the composing species? (B) How and by how much do plasma-neutral gas interactions contribute toward the growth of heavy complex molecules and biomolecules? Answering these questions is an absolute prerequisite for addressing the long-standing questions of atmospheric escape, the origin of biomolecules, and their role in the evolution of planets, moons, or comets, under the influence of energy sources in the form of electromagnetic and corpuscular radiation, because low-energy ion-neutral cross-sections in space cannot be reproduced quantitatively in laboratories for conditions of satisfying, particularly, (1) low-temperatures, (2) tenuous or strong gradients or layered media, and (3) in low-gravity plasma. Measurements with a minimum core instrument package (< 15 kg) can be used to perform such investigations in many different conditions and should be included in all deep-space missions. These investigations, if specific ranges of background parameters are considered, can also be pursued for Earth, Mars, and Venus.
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Dates and versions

insu-03672042 , version 1 (19-05-2022)

Licence

Attribution - CC BY 4.0

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Masatoshi Yamauchi, Johan de Keyser, George Parks, Shin-Ichiro Oyama, Peter Wurz, et al.. Plasma-neutral gas interactions in various space environments: Assessment beyond simplified approximations as a Voyage 2050 theme. Experimental Astronomy, 2022, ⟨10.1007/s10686-022-09846-9⟩. ⟨insu-03672042⟩
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