Magnetic field recovery technique based on distance weighting multipole expansion method Binbin Liu, Zhen Yang, Li-e Qiang, Xiaodong Peng, Xiaoshan Ma, Peng Xu, Ziren Luo, Wenlin Tang, Yuzhu Zhang and Chen Gao EPL, 143 5 (2023) 59003 Published online: 07 September 2023 DOI: 10.1209/0295-5075/acf51f