Isotopes of Einsteinium (Z=99)
Click on an isotope to get more information about its decay
|
Isotope
|
Half-life
|
Spin
Parity
|
Decay Mode(s) or
Abundance |
|---|
| 240Es
| |
|
|
|---|
| 241Es
| 9 s |
|
%A=100
|
|---|
| 242Es
| 40 s |
|
%A ~ 100, %ECSF=1.4 8
|
|---|
| 243Es
| 21 s |
|
%EC < 70, %A > 30
|
|---|
| 244Es
| 37 s |
|
%EC=96 3, %A=4 3, %ECSF=0.01 sys
|
|---|
| 245Es
| 1.1 m | (3/2-)
|
%EC=60 10, %A=40 10
|
|---|
| 246Es
| 7.7 m | (4-,6+)
|
%EC=90.1 18, %A=9.9 18, %ECSF=0.003 sys
|
|---|
| 247Es
| 4.55 m | (7/2+)
|
%EC ~ 93, %A ~ 7
|
|---|
| 248Es
| 27 m | (2-,0+)
|
%EC>99, %A ~ 0.25, %ECSF=3E-5 sys
|
|---|
| 249Es
| 102.2 m | 7/2(+)
|
%EC=99.43 8, %A=0.57 8
|
|---|
| 250Es
| 8.6 h | (6+)
|
%EC > 97, %A < 3 sys
|
|---|
| 250m1Es
| 2.22 h | 1(-)
|
%EC > 99, %A < 1 sys
|
|---|
| 251Es
| 33 h | (3/2-)
|
%EC=99.51 12, %A=0.49 12
|
|---|
| 252Es
| 471.7 d | (5-)
|
%A=76 4, %EC=24 2, %B- ~ 0.01
|
|---|
| 253Es
| 20.47 d | 7/2+
|
%A=100, %SF=8.9E-6 3
|
|---|
| 254Es
| 275.7 d | (7+)
|
%A=100, %EC<1E-4, %B-=1.74E-6 8, %SF<3E-6
|
|---|
| 254m1Es
| 39.3 h | 2+
|
%B-=98 2, %A=0.33 1, %IT<3, %EC=0.078 6, %SF<0.045
|
|---|
| 255Es
| 39.8 d | (7/2+)
|
%B-=92.0 4, %A=8.0 4, %SF=0.0045 3
|
|---|
| 256Es
| 25.4 m | (1+)
|
%B-=100
|
|---|
| 256m1Es
| 7.6 h | (8+)
|
%B- ~ 100, %B-SF=0.002
|
|---|
| 257Es
| |
|
|
|---|
Isotope Explorer Nuclear Structure and Decay Data
8th Edition of the Table of Isotopes
Isotopes Project Home Page
Lawrence Berkeley National Laboratory