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

Image analysis procedure of v_arc in multi-arc generator with different electrode configurations: (a), (c), (e) and (b), (d), (f) corresponding to C_3 and C_4, respectively. (a), (b) The original discharge images, (c), (d) extracted grayscale value of pixels along the circumference of the observing zone, (e), (f) the cross-correlation coefficient between two gray value distributions as a function of the arc displacement.