Geometrical optimization of quasi-spherical wire-array implosion Fuyuan Wu, Yanyun Chu, Zhen Wang, Zhenghong Li, Fan Ye, Dingyang Chen, Jianlun Yang, Rongkun Xu and Zeping Xu Eur. Phys. J. D, 71 11 (2017) 270 Published online: 02 November 2017 DOI: 10.1140/epjd/e2017-80261-0