Isotopes of Thorium (Z=90)
Click on an isotope to get more information about its decay
|
Isotope
|
Half-life
|
Spin
Parity
|
Decay Mode(s) or
Abundance |
|---|
| 210Th
| 9 ms | 0+
|
%A ~ 100
|
|---|
| 211Th
| 37 ms |
|
%A=?, %EC=?
|
|---|
| 212Th
| 30 ms | 0+
|
%A=100, %EC+%B+ ~ 0.3
|
|---|
| 213Th
| 140 ms |
|
%A < 100
|
|---|
| 214Th
| 100 ms | 0+
|
%A=100
|
|---|
| 215Th
| 1.2 s | (1/2-)
|
%A=100
|
|---|
| 216Th
| 0.028 s | 0+
|
%A=100, %EC+%B+ ~ 0.01 sys
|
|---|
| 216m1Th
| 180 us | (8+,11-)
|
|
|---|
| 217Th
| 0.252 ms | (9/2+)
|
%A=100
|
|---|
| 218Th
| 109 ns | 0+
|
%A=100
|
|---|
| 219Th
| 1.05 us |
|
%A=100, %EC+%B+ ~ 1E-7
|
|---|
| 220Th
| 9.7 us | 0+
|
%A=100, %EC=2E-7 sys
|
|---|
| 221Th
| 1.68 ms | (7/2+)
|
%A=100
|
|---|
| 222Th
| 2.8 ms | 0+
|
%A=100
|
|---|
| 223Th
| 0.60 s | (5/2)+
|
%A=100
|
|---|
| 224Th
| 1.05 s | 0+
|
%A=100
|
|---|
| 225Th
| 8.72 m | (3/2)+
|
%A ~ 90, %EC ~ 10
|
|---|
| 226Th
| 30.57 m | 0+
|
%A=100
|
|---|
| 227Th
| 18.72 d | (1/2+)
|
%A=100
|
|---|
| 228Th
| 1.9116 y | 0+
|
%A=100, %20O=1.13E-11 22
|
|---|
| 229Th
| 7340 y | 5/2+
|
%A=100
|
|---|
| 230Th
| 7.538e+4 y | 0+
|
%A=100, %24NE=5.6E-11 10, %SF < 3.8E-12
|
|---|
| 231Th
| 25.52 h | 5/2+
|
%B-=100, %A ~ 1E-8
|
|---|
| 232Th
| 1.405e10 y | 0+
|
%Abundance=100, %A=100 , %SF<1.8E-9
|
|---|
| 233Th
| 22.3 m | 1/2+
|
%B-=100
|
|---|
| 234Th
| 24.10 d | 0+
|
%B-=100
|
|---|
| 235Th
| 7.1 m | (1/2+)
|
%B-=100
|
|---|
| 236Th
| 37.5 m | 0+
|
%B-=100
|
|---|
| 237Th
| 5.0 m |
|
%B-=100
|
|---|
| 238Th
| |
|
|
|---|
Isotope Explorer Nuclear Structure and Decay Data
8th Edition of the Table of Isotopes
Isotopes Project Home Page
Lawrence Berkeley National Laboratory