Characteristics of rf-produced, high-density plasma with very small diameter
Characteristics of rf-produced, high-density plasma with very small diameter
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DOI：
10.7566/jpscp.1.015022
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发表时间：
2014-03
期刊：
影响因子：
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通讯作者：
T. Nakagawa;S. Shinohara;D. Kuwahara;A. Mishio;H. Fujitsuka
中科院分区：
文献类型：
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作者：
T. Nakagawa;S. Shinohara;D. Kuwahara;A. Mishio;H. Fujitsuka
为了研究直径很小的螺旋等离子体的特性，我们研制了小螺旋装置（SHD），并在各种条件下在很宽的无线电频率范围内测量了电子密度。采用内径为20 mm的电子管，在激励频率f为7 MHz，射频功率Prf为1000 W，电磁线圈B区轴向磁场为560 G的条件下，天线区附近的电子密度ne为1013 cm。在f = 12（7）MHz、Prf ~ 1000 W和B = 280 G的条件下内径为5（10）mm的情况下，即使远离天线区域也成功地实现了~ 10 11 cm的ne。
To investigate characteristics of helicon plasma with a very small diameter, we have developed the Small Helicon Device (SHD) and measured the electron density under various conditions over a wide range of radio frequencies. Using a tube with inner diameter of 20 mm, an electron density ne of ~ 10 13 cm near the antenna region was obtained with an excitation frequency f of 7 MHz, rf power Prf of ~ 1000 W, and axial magnetic field in the magnet coil region B of 560 G. In the case of an inner diameter of 5 (10) mm under conditions of f = 12 (7) MHz, Prf ~ 1000 W, and B = 280 G, ne of ~ 10 11 cm was succesfully achieved even away from the antenna region.