Japan Geoscience Union Meeting 2022

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[J] Poster

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

[P-CG19] Planetary Magnetosphere, Ionosphere, and Atmosphere

Sun. May 29, 2022 11:00 AM - 1:00 PM Online Poster Zoom Room (4) (Ch.04)

convener:Hiroyuki Maezawa(Department of Physical Science Osaka Prefecture University), convener:Naoki Terada(Graduate School of Science, Tohoku University), Kanako Seki(Graduate School of Science, University of Tokyo), convener:Takeshi Imamura(Graduate School of Frontier Sciences, The University of Tokyo), Chairperson:Shohei Aoki(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Kanako Seki(Graduate School of Science, University of Tokyo), Takeshi Imamura(Graduate School of Frontier Sciences, The University of Tokyo)

11:00 AM - 1:00 PM

[PCG19-P08] Numerical simulations of 1keV electron energy loss by ionization with neutral H2O around Enceladus

*Hiroyasu Tadokoro1, Yuto Katoh2 (1.Surugadai University, 2.Graduate School of Science, Tohoku Universit)

Keywords:electron energy loss, ionization, Saturn, Enceladus, Numerical simulation

Saturn’s inner magnetosphere is dominated by water group neutrals (H2O, OH, and O) originated from Enceladus. Previous studies suggested that the neutrals contribute to loss processes of plasma in the inner magnetosphere. However, little has been reported on a quantitative study of the electron loss process due to electron-neutral collisions. Tadokoro and Katoh [2014] focused on the loss process of 1 keV electron through the elastic collision with neutral H2O around Enceladus. With regard to above several hundred eV, ionization cross section for electron electron-H2O collision is greater than elastic collision. We focus on 1keV electron energy loss by the ionization with neutral H2O in this study. Conducting one dimensional test-particle simulation, we calculate the electron ionization collision. We show the 1keV electron energy loss due to ionization process.