کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1688955 | 1011203 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characteristics of ions impacting grid surfaces in an ion engine
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Characteristics of ions impacting grid surfaces in an ion engine Characteristics of ions impacting grid surfaces in an ion engine](/preview/png/1688955.png)
چکیده انگلیسی
Numerical evaluations of grid erosions in ion engines are required to estimate the lifetimes of long-term space missions. In this study, to investigate the characteristics of ions colliding with neutrals and impacting the accel grid surface, including ions that collide with neutrals more than once, three-dimensional particle analyses using a full-PIC (Particle in Cell) code were performed. The distributions of erosion by charge-exchanged ions show periodic patterns. The multiple-collided ion constitutes 7 and 8% of the accel grid current to the inner and downstream surfaces, respectively. The energy of the multiple-collided ion impacting the downstream surface has a broader distribution than that of the charge-exchanged ion. These results suggest the importance of investigating multiple-collided ions in high-accuracy quantitative evaluations of grid erosion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 85, Issue 5, 9 November 2010, Pages 585-590
Journal: Vacuum - Volume 85, Issue 5, 9 November 2010, Pages 585-590
نویسندگان
Takeshi Miyasaka, Tsutomu Kobayashi, Katsuo Asato,