摘要
In our article we wrote the three-point mass relation based on deutron separation energies in the formΔnp^(3)(N,Z)=(-1)N+1/2(Sd(N+1,Z+1)-Sd(N,Z))=(-1)^N+1/2(B(N+1,Z+1)--2B(N,Z)+B(N-1;Z-1)),(1)which holds true for the case of even-A nuclei.Factor(-1)^N+1 is taken into account to reproduce the even-odd staggering(EOS)effect for even-even and odd-odd nuclei.For the case of odd-A nuclei,on the other hand,the value ofΔnp^(3)(N,Z)was shown to oscillate near the zero value(which corresponds to EOS for odd-even and evenodd nuclei),and taking the corresponding factor into account makes no sense.