Determination of the gamma emission probabilities of 239Np Shang Jian-bo, Du li-li, Bai Tao, Dai Yi-hua, Zhong Zhen-yuan, Liu Jie and Shi Quan-lin EPJ Web Conf., 146 (2017) 10006 Published online: 13 September 2017 DOI: 10.1051/epjconf/201714610006