Input interpretation
double beta plus decay
Members
Ar-36 | Ba-130 | Ba-132 | Cd-106 | Cd-108 | Ca-40 | Ce-136 | Ce-138 | Cr-50 | Cm-242 | Dy-154 | Dy-156 | Dy-158 | Er-162 | Er-164 | Fm-252 | Gd-148 | Gd-150 | Gd-152 | Hf-174 | Fe-54 | Kr-78 | Hg-196 | Mo-92 | Ni-58 | No-258 | Os-184 | Pd-102 | Pt-190 | Pu-236 | Ra-218 | Rn-212 | Rn-214 | Ru-96 | Sm-144 | Se-74 | Sr-84 | Te-120 | Th-224 | Sn-112 | W-180 | U-230 | Xe-124 | Xe-126 | Yb-168 | Zn-64 (total: 46)
Natural abundance
isotope abundance | median | 0.135% | highest | 96.94% (Ca-40) | lowest | 0 (12 isotopes) | distribution |
Decay properties
half-life | median | 325 billion yr | highest | 3×10^21 yr (9.13×10^8 to ∞ s) (Ba-132 and Ca-40) | lowest | 270 ns (249.7 to 290.3 ns) (Rn-214) mean lifetime | median | 469 billion yr | highest | 4.3×10^21 yr (1.31×10^9 to ∞ s) (Ba-132 and Ca-40) | lowest | 390 ns (360.3 to 418.7 ns) (Rn-214) decay constant | highest | 2.56×10^6 per second (Rn-214) | lowest | 0 per second (22 isotopes) | median | 7.3×10^-30 per second specific activity | highest | 7.22×10^15 TBq/g (Rn-214) | lowest | 0 Bq/g (22 isotopes) | median | 7.2×10^-8 Bq/g width | median | 3.3×10^-45 eV | highest | 1.69×10^-9 eV (Rn-214) | lowest | 0 eV (22 isotopes)
Units
