کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5468466 | 1518936 | 2016 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hollow cathode vacuum arc plasma electron source for the generation of a high-current DC electron beam
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
This article presents the principle of operation, design, and performance data of a hollow cathode vacuum arc plasma electron source. The required electric strength of the accelerating gap can be ensured by generating a longitudinal magnetic field in the electron extraction region. This method is used to generate a high current DC electron beam. The effect of the magnetic field on the discharge and the emission characteristics of the plasma electron source are observed. With extraction voltages up to 700Â V, and a magnetic field as high as 100Â mT, we demonstrate a DC emission current of roughly 9 A. The hollow cathode vacuum arc plasma electron source exhibits emission characteristics characterized by three different stages: a rapid increase stage in which high-energy electrons are extracted; a slow increase stage in which a small number of high-energy electrons and a large amount of low-energy electrons are extracted together; and a stable stage.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 134, December 2016, Pages 83-87
Journal: Vacuum - Volume 134, December 2016, Pages 83-87
نویسندگان
Jianping Xu, Xiubo Tian, Chunzhi Gong, Chunwei Li, Chuang Yang,