Acceleration characteristics of laser ablation Cu plasma in the electrostatic field Buren Duan, Haonan Zhang, Lizhi Wu, Zuohao Hua, Zijing Bao, Ning Guo, Yinghua Ye and Ruiqi Shen Eur. Phys. J. Appl. Phys., 93 2 (2021) 20802 Published online: 18 February 2021 DOI: 10.1051/epjap/2021200349