Isotopes of Americium (Z=95)
Click on an isotope to get more information about its decay
| Isotope
| Half-life
| Spin
Parity
| Decay Mode(s) or
Abundance |
|---|
| 231Am | | |
|
|---|
| 232Am | 79 s | |
%EC ~ 98, %A ~ 2, %ECSF=0.069 10
|
|---|
| 233Am | | |
|
|---|
| 234Am | 2.32 m | |
%EC=99.961 12, %A=0.039 12, %ECSF=0.0066 18
|
|---|
| 235Am | 15 m | |
%EC+%B+=?, %A=?
|
|---|
| 236Am | | |
%EC=?, %A=?
|
|---|
| 237Am | 73.0 m | 5/2(-) |
%A=0.025 3, %EC=99.975 3
|
|---|
| 237m1Am | 5 ns | |
|
|---|
| 238Am | 98 m | 1+ |
%EC+%B+>99.99, %A=1.0E-4 4
|
|---|
| 238m1Am | 35 us | |
|
|---|
| 239Am | 11.9 h | (5/2)- |
%EC=99.990 1, %A=0.010 1
|
|---|
| 239m1Am | 163 ns | (7/2+) |
|
|---|
| 240Am | 50.8 h | (3-) |
%EC=100, %A=1.9E-4 7
|
|---|
| 241Am | 432.2 y | 5/2- |
%A=100, %SF=4.3E-10 18
|
|---|
| 241m1Am | 1.2 us | |
|
|---|
| 242Am | 16.02 h | 1- |
%B-=82.7 3, %EC=17.3 3
|
|---|
| 242m1Am | 141 y | 5- |
%IT=99.541 12, %A=0.459 12, %SF < 4.7E-9
|
|---|
| 242m2Am | 14.0 ms | |
%SF=?, %IT=?
|
|---|
| 243Am | 7370 y | 5/2- |
%A=100, %SF=3.7E-9 9
|
|---|
| 243m1Am | 5.5 us | |
|
|---|
| 244Am | 10.1 h | (6-) |
%B-=100
|
|---|
| 244m1Am | 26 m | 1+ |
%B-=99.9639 13, %EC=0.0361 13
|
|---|
| 245Am | 2.05 h | (5/2)+ |
%B-=100
|
|---|
| 245m1Am | 0.64 us | |
|
|---|
| 246Am | 39 m | (7-) |
%B-=100
|
|---|
| 246m1Am | 25.0 m | 2(-) |
%B-=100, %IT<0.01
|
|---|
| 246m2Am | 73 us | |
|
|---|
| 247Am | 23.0 m | (5/2) |
%B-=100
|
|---|
| 248Am | | |
|
|---|
| 249Am
| | |
|
|---|
Last update on
September 3, 2015
