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
| |
|
|
|---|
Isotope Explorer Nuclear Structure and Decay Data
8th Edition of the Table of Isotopes
Isotopes Project Home Page
Lawrence Berkeley National Laboratory