Californium
Main article: Isotopes of californium
| Isotope | Half-life | Spin Parity | Mode(s) or Abundance |
|---|---|---|---|
| 237Cf | 2.1 s | %SF ~ 10 sys | |
| 238Cf | 21 ms | 0+ | %SF ~ 100 sys |
| 239Cf | 39 s | %α=? | |
| 240Cf | 1.06 m | 0+ | %α=87, %SF ~ 13 |
| 241Cf | 3.78 m | %K ~ 75, %α ~ 25 | |
| 242Cf | 3.49 m | 0+ | %α=65, %SF < 1.4E-2 |
| 243Cf | 10.7 m | (1/2+ ) | %K ~ 86, %α ~ 14 |
| 244Cf | 19.4 m | 0+ | %α=70 |
| 245Cf | 45.0 m | (5/2+ ) | %K=64, %α=36 |
| 246Cf | 35.7 h | 0+ | %α=99.9996, %SF=2.3E-4, %K<5E-4 |
| 246m1Cf | 45 ns | ||
| 247Cf | 3.11 h | (7/2+ ) | %K=99.965, %α=0.035 |
| 248Cf | 333.5 d | 0+ | %α=99.9971, %SF=0.0029 |
| 249Cf | 351 a | 9/2- | %α=100, %SF=4.4E-7 |
| 250Cf | 13.08 a | 0+ | %α=99.923, %SF=0.077 |
| 251Cf | 898 a | 1/2+ | %α=100 |
| 252Cf | 2.645 a | 0+ | %α=96.908, %SF=3.092 |
| 253Cf | 17.81 d | (7/2+ ) | %β-=99.69, %α=0.31 |
| 254Cf | 60.5 d | 0+ | %SF=99.69, %α=0.31 |
| 255Cf | 85 m | (9/2+ ) | %β-=100 |
| 256Cf | 12.3 m | 0+ | %SF=100, %β-<1 sys %α ~ 1E-6 sys |
Read more about this topic: Isotope Lists, 97+