Characteristics of non-thermal AC arcs in multi-arc generator<xref rid="cpb_28_12_125205fn1" ref-type="fn">*</xref><fn id="cpb_28_12_125205fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant Nos. 11875295 and 11535003), Provincial Science and Technology Major Project of Anhui Province, China (Grant No. 17030801035), and Key Program of 13th Five-year Plan, CASHIPS, China (Grant No. KP-2017-25).</p></fn>

Characteristics of non-thermal AC arcs in multi-arc generator**

Project supported by the National Natural Science Foundation of China (Grant Nos. 11875295 and 11535003), Provincial Science and Technology Major Project of Anhui Province, China (Grant No. 17030801035), and Key Program of 13th Five-year Plan, CASHIPS, China (Grant No. KP-2017-25).

Lin Qifu^{1, 2}, Zhao Yanjun^{1, 2}, Duan Wenxue¹, Ni Guohua^{1, 3, †}, Jin Xinyue^{1, 2, 3}, Sui Siyuan^{1, 2}, Xie Hongbing¹, Meng Yuedong¹

The schematic of four types of electrode configurations in multi-arc generator, (a) configuration 1 (C_1), adjacent-electrode opposite-flow configuration, (b) configuration 2 (C_2), opposite-electrode opposite-flow configuration, (c) configuration 3 (C_3), adjacent-electrode swirl-flow configuration, (d) configuration 4 (C_4), opposite-electrodes swirl-flow configuration.