Modulation of absorption manner in helicon discharges by changing profile of low axial magnetic field<xref rid="cpb_26_10_105201_fn1" ref-type="fn">*</xref> <fn id="cpb_26_10_105201_fn1"> <label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant Nos. 11175024, 11375031, and 11505013), the Beijing Natural Science Foundation of China (Grant No. KZ201510015014), and the Beijing Municipal Natural Science Foundation, China (Grant No. 4162024).</p> </fn>

Modulation of absorption manner in helicon discharges by changing profile of low axial magnetic field* *

Project supported by the National Natural Science Foundation of China (Grant Nos. 11175024, 11375031, and 11505013), the Beijing Natural Science Foundation of China (Grant No. KZ201510015014), and the Beijing Municipal Natural Science Foundation, China (Grant No. 4162024).

Zhao Gao¹, Wang Yu¹, Niu Chen², Liu Zhong-Wei², Ouyang Jiting^{1, †}, Chen Qiang^{2, ‡}

Three kinds of magnetic field profiles used in this work. (a) Case 1: coils 1#, 2# are on, the other coils are off; (b) Case 2: coils 3#, 4#, 5#, and 6# are on, the other ones are off; (c) Case 3: coils 7# and 8# are on, the other ones are off.