[P-CG19] 惑星大気圏・電磁圏

[PCG19-P01] アップデートした弾性衝突モデルを用いたエンケラドス衛星起源の水分子によるkeV電子弾性衝突のテスト粒子シミュレーション

*田所 裕康¹、加藤 雄人² (1.東北学院大学、2.東北大学大学院理学研究科)

キーワード：テスト粒子シミュレーション、土星磁気圏、エンケラドス、電子弾性衝突、電子中性衝突、モンテカルロシミュレーション

Saturn’s inner magnetosphere is primarily composed of water group neutrals originated from Enceladus, significantly contributing to plasma loss. Our previous studies have investigated the electron loss through elastic collisions with water molecules. We have previously estimated the electron loss rate and energy input into the atmosphere due to the elastic collisions between 500 eV to 50 keV electrons and water molecules. However, the peak energy of electron energy input has remained unidentified. This suggests the need for a re-examination of the differential scattering cross section model for keV electrons. This study presents an improved model and recalculates the electron loss rate due to elastic collisions using the updated model.