Einsteinium
Main article: Isotopes of einsteinium
| Isotope | Half-life | Spin Parity | Mode(s) or Abundance |
|---|---|---|---|
| 241Es | 9 s | %α=100 | |
| 242Es | 40 s | %α ~ 100, %KSF=1.4 | |
| 243Es | 21 s | %K < 70, %α > 30 | |
| 244Es | 37 s | %K=96, %α=4, %KSF=0.01 sys | |
| 245Es | 1.1 m | (3/2- ) | %K=60, %α=40 |
| 246Es | 7.7 m | (4-,6+) | %K=90.1, %α=9.9, %KSF=0.003 sys |
| 247Es | 4.55 m | (7/2+ ) | %K ~ 93, %α ~ 7 |
| 248Es | 27 m | (2-,0+ ) | %K>99, %α ~ 0.25, %KSF=3E-5 sys |
| 249Es | 102.2 m | 7/2(+) | %K=99.43, %α=0.57 |
| 250Es | 8.6 h | (6+) | %K > 97, %α < 3 sys |
| 250m1Es | 2.22 h | 1(-) | %K > 99, %α < 1 sys |
| 251Es | 33 h | (3/2- ) | %K=99.51, %α=0.49 |
| 252Es | 471.7 d | (5-) | %α=76, %K=24, %β- ~ 0.01 |
| 253Es | 20.47 d | 7/2+ | %α=100, %SF=8.9E-6 |
| 254Es | 275.7 d | (7+) | %α=100, %K<1E-4, %β-=1.74E-6, %SF<3E-6 |
| 254m1Es | 39.3 h | 2+ | %β-=98, %α=0.33, %IT<3, %K=0.078, %SF<0.045 |
| 255Es | 39.8 d | (7/2+ ) | %β-=92.0, %α=8.0, %SF=0.0045 |
| 256Es | 25.4 m | (1+ ) | %β-=100 |
| 256m1Es | 7.6 h | (8+) | %β- ~ 100, %β-SF=0.002 |
Read more about this topic: Isotope Lists, 97+