在本篇論文中，我們將取得E3, E5, E7, E14, E17 and E18共6次的飛掠的資料，並針對羽狀噴泉中的主要成分CO2, N2 和 H2進行資料處理，並優化資料中CO2, N2 和 H2的數據，以進行分析和探討；由於氣體噴泉中含有許多微小的水冰，會在資料中造成奇特的尖狀資料點(spikes)，針對這些資料點進行篩選，討論其可能的形成原因。綜合以上試著幫助我們更了解Enceladus羽狀噴泉的密度分布和其組成成分。 In the satellite tour mission of the Cassini-Huygens project, the Cassini Orbiter made several flybys through the water gas plume of the active icy satellite, Enceladus. The Ion Neutral Mass Spectrometer (INMS) onboard obtained measurements of the density distributions of the water molecule and other minor species along the trajectories. In this study, we will present the optimization of CO2, N2 and H2 data for 6 flybys – E3, E5, E7, E14, E17 and E18. We also pick out the spikes appearing in the counts data and discuss the possible formation of these spikes. These will help us understand the gas density distributions and compositions in the water plume of Enceladus.
