Two-proton radioactivity of exotic nuclei beyond proton drip-line

Yanzhao Wang(王艳召),Jianpo Cui(崔建坡),Yonghao Gao(高永浩),Jianzhong Gu(顾建中)

Table 1. The comparison between the experimental Q2p values and those extracted from the WS4 [63], FRDM [64], KTUY [74] and HFB29 [67] nuclear mass models. log${}_{10}{T}_{1/2}^{\mathrm{cal}.}$ denotes the corresponding 2p radioactivity half-lives within the GLDM by inputting the experimental Q2p values and those extracted from the four kinds mass models. log${}_{10}{T}_{1/2}^{\mathrm{expt}.}$ stands for the experimental 2p radioactivity half-lives. All the Q2p and log${}_{10}{T}_{1/2}$ values are measured in MeV and second, respectively. The symbol ‘—' means the Q2p values or the log${}_{10}{T}_{1/2}^{\mathrm{cal}.}$ values are not available.

Nuclei Q2p (MeV) log${}_{10}{T}_{1/2}^{\mathrm{cal}.}$ (s) log${}_{10}{T}_{1/2}^{\mathrm{expt}.}$ (s) Expt. WS4 FRDM KTUY HFB29 Expt. [41] WS4 FRDM KTUY HFB29 ${}_{12}^{19}$Mg 0.750 [24] — — 1.14 — −11.79${}_{-0.42}^{+0.47}$ — — −14.28 — −11.40${}_{-0.20}^{+0.14}$ [24] ${}_{26}^{45}$Fe 1.100 [20] 2.06 1.89 1.19 1.92 −2.23${}_{-1.17}^{+1.34}$ −9.59 −8.71 −3.28 −8.88 −2.40${}_{-0.26}^{+0.26}$ [20] 1.140 [21] −2.71${}_{-0.57}^{+0.61}$ −2.07${}_{-0.21}^{+0.24}$ [21] 1.154 [23] −2.87${}_{-0.18}^{+0.19}$ −2.55${}_{-0.12}^{+0.13}$ [23] 1.210 [88] −3.50${}_{-0.52}^{+0.56}$ −2.42${}_{-0.03}^{+0.03}$ [88] ${}_{28}^{48}$Ni 1.350 [23] 2.54 3.30 1.95 3.63 −3.24${}_{-0.20}^{+0.20}$ −10.47 −12.84 −7.73 −13.62 −2.08${}_{-0.78}^{+0.40}$ [23] 1.290 [89] −2.62${}_{-0.42}^{+0.44}$ −2.52${}_{-0.22}^{+0.24}$ [89] 1.310 [90] −2.83${}_{-0.41}^{+0.43}$ −2.52${}_{-0.22}^{+0.24}$ [91] ${}_{30}^{54}$Zn 1.480 [22] 1.98 2.77 1.65 1.61 −2.95${}_{-0.19}^{+0.19}$ −6.67 −10.33 −4.40 −4.08 −2.43${}_{-0.14}^{+0.20}$ [22] 1.280 [92] −0.87${}_{-0.24}^{+0.25}$ −2.76${}_{-0.14}^{+0.15}$ [92] ${}_{36}^{67}$Kr 1.690 [25] 3.06 1.33 1.52 1.94 −1.25${}_{-0.16}^{+0.16}$ −9.27 2.75 0.46 −3.34 −1.70${}_{-0.02}^{+0.02}$ [25]