New Short-lived Isotope ²²³Np was Identified

New short-lived isotope 223Np was discovered at the SHANS gas-filled separator in IMP. The experimental results indicate the absence of the Z = 92 sub-shell closure around N = 126.New short-lived isotope 223Np was discovered at the SHANS gas-filled separator in IMP. The experimental results indicate the absence of the Z = 92 sub-shell closure around N = 126.
　　The existenc...