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

Procedure for image analysis of luminance area generated by multiple arcs in C_2. (a) Origin discharge image, (b) delimit the discharge zone, (c) circular observing zones were introduced, (d) converting the grayscale image into binary image.