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タイトル
和文: 
英文:Determination of Electron Density and its Temperature using Collisional Radiative (CR) Model for Argon Gas in High-Density Helicon Source 
著者
和文: 堀田大貴, 桑原大介, 篠原俊二郎, 赤塚洋.  
英文: Hirotaka Horita, Daisuke Kuwahara, Shunjiro Shinohara, Hiroshi Akatsuka.  
言語 English 
掲載誌/書名
和文: 
英文:Bulletin of the American Physical Society 
巻, 号, ページ        
出版年月 2018年11月5日 
出版者
和文:米国物理学会 
英文:The American Physical Society 
会議名称
和文: 
英文:60th Annual Meeting of the APS Division of Plasma Physics 
開催地
和文:ポートランド 
英文:Portland 
公式リンク http://meetings.aps.org/Meeting/DPP18/Session/JP11.115
 
アブストラクト To explore a deep space for a long-time period, a spacecraft must have a long-lifetime and highly efficient thruster. We have proposed an electrodeless plasma propulsion system using a high-density (~1013 cm-3) helicon plasma [1]. To characterize this thruster, we need to measure plasma parameters, e.g., an electron density (ne) and its temperature (Te). A probe method, which is a general measurement, is useful, but it disturbs a plasma flow. To determine these parameters without any disturbance to a plasma, we have been developing a spectral measurement method using a Collisional Radiative (CR) model for the argon atoms [2,3]. This method needs many parameters, e.g., cross-section, diffusion coefficients, and various assumptions. In this study, improvement of some parameters and calculation results compared with probe experiments, will be presented. [1] S. Shinohara, H. Nishida, T. Tanikawa, T. Hada, I. Funaki, IEEE Trans. Plasma Sci., 42 (2014) 1245. [2] J. Vlček, J. Phys. D: Appl. Phys., 22 (1989) 623. [3] H. Akatsuka, Phys. Plasmas, 16 (2009) 043502.

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