Table 1.
Radioactive decay chains with half-lives trac12 > 1 s ending in a stable isotope of nickel.
| Parent | Daughter | Half-life | Decay mode | Final |
|---|---|---|---|---|
| isotope | isotope | (t1/2) | (branching %) | product |
| 58Cu | 58Ni | 3.204(7) s | ϵ + β+ | 58Ni |
| 60Mn | 60Fe | 51(6) s | β− | 60Ni |
| 60Fe | 60Co | 2.62(4) × 106 y | β− | 60Ni |
| 60Co | 60Ni | 5.2714(6) y | β− | 60Ni |
| 60Zn | 60Cu | 2.38(5) m | ϵ + β+ | 60Ni |
| 61Fe | 61Co | 5.98(6) m | β− | 61Ni |
| 61Co | 61Ni | 1.650(5) h | β− | 61Ni |
| 61Zn | 61Cu | 89.1(2) s | ϵ + β+ | 61Ni |
| 61Cu | 61Ni | 3.333(5) h | ϵ + β+ | 61Ni |
| 62Fe | 62Co | 68(2) s | β− | 62Ni |
| 62Co | 62Ni | 1.50(4) m | β− | 62Ni |
| 62Zn | 62Cu | 9.186(13) h | ϵ + β+ | 62Ni |
| 62Cu | 62Ni | 9.74(2) m | ϵ + β+ | 62Ni |
| 64Fe | 64Co | 2.0(2) s | β− | 64Ni |
| 64Co | 64Ni | 0.30(3) s | β− | 64Ni |
| 64Cu | 64Ni | 12.700(2) h | ϵ + β+ [61.0(3)] | 64Ni |
Notes. Data are from Chu et al. (1999) except for the half-life for 60Fe→60Co, which is taken from Rugel et al. (2009). Numbers in parentheses are the 1σ uncertainty on the last digit. Numbers in square brackets give the branching ratio (%), which is implicitly 100% when not given. The decay mode ϵ refers to electron capture (EC). Although its half-life is less than 1 s, we report the 64Co→64Ni decay since it is part of the 64Fe→64Co→64Ni decay chain. We do not consider excited nuclear isomer states of 60mMn, 60mCo, or 62mCo.
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