Lithium plasma emitter for collisionless magnetized plasma experiment |
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Authors: | Kawamori Eiichirou Lee Jyun-Yi Huang Yi-Jue Syugu Wun-Jheng Song Sung-Xuang Hsieh Tung-Yuan Cheng C Z |
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Affiliation: | Institute of Space, Astrophysical and Plasma Sciences, National Cheng Kung University, Tainan, Taiwan. |
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Abstract: | This paper presents a newly developed lithium plasma emitter, which can provide quiescent and low-temperature collisionless conditions for magnetized plasma experiments. This plasma emitter generates thermal emissions of lithium ions and electrons to produce a lithium plasma. Lithium type beta-eucryptite and lanthanum-hexaboride (LaB(6)) powders were mixed and directly heated with a tungsten heater to synthesize ion and electron emissions. As a result, a plasma with a diameter of ~15 cm was obtained in a magnetic mirror configuration. The typical range of electron density was 10(12)-10(13) m(-3) and that of electron temperature was 0.1-0.8 eV with the emitter operation temperature of about 1500 K. The amplitude fluctuations for the plasma density were lower than 1%. |
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