Isotopes of Berkelium (Z=97)
Click on an isotope to get more information about its decay
|
Isotope
|
Half-life
|
Spin
Parity
|
Decay Mode(s) or
Abundance |
|---|
| 235Bk
| |
|
|
|---|
| 236Bk
| |
|
%EC+%B+=?
|
|---|
| 237Bk
| |
|
|
|---|
| 238Bk
| 144 s |
|
%EC+%B+=100, %ECSF=0.048 2
|
|---|
| 239Bk
| | (7/2+)
|
|
|---|
| 240Bk
| 4.8 m |
|
%EC+%B+=100, %ECSF=1E-3 sys
|
|---|
| 241Bk
| | (7/2+)
|
|
|---|
| 242Bk
| 7.0 m |
|
%EC+%B+=100
|
|---|
| 242m1Bk
| 9.5 ns |
|
|
|---|
| 242m2Bk
| 0.60 us |
|
|
|---|
| 243Bk
| 4.5 h | (3/2-)
|
%EC ~ 99.85, %A ~ 0.15
|
|---|
| 243m1Bk
| 5 ns |
|
|
|---|
| 244Bk
| 4.35 h | (1-)
|
%EC=99.994 2, %A=0.006 2
|
|---|
| 245Bk
| 4.94 d | 3/2-
|
%EC=99.88 1, %A=0.12 1
|
|---|
| 245m1Bk
| 2 ns |
|
|
|---|
| 246Bk
| 1.80 d | 2(-)
|
%EC=100, %A<0.2 sys
|
|---|
| 247Bk
| 1380 y | (3/2-)
|
%A < 100
|
|---|
| 248Bk
| 9 y | (6+)
|
%A>70
|
|---|
| 248m1Bk
| 23.7 h | 1(-)
|
%B-=70 5, %EC=30 5, %A<0.001
|
|---|
| 249Bk
| 320 d | 7/2+
|
%B-=99.99855 8, %A=0.00145 8, %SF=4.76E-8 23
|
|---|
| 250Bk
| 3.217 h | 2-
|
%B-=100
|
|---|
| 251Bk
| 55.6 m | (3/2-)
|
%B-=100, %A ~ 1E-5
|
|---|
| 252Bk
| |
|
|
|---|
| 253Bk
| |
|
|
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| 254Bk
| |
|
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|---|
Isotope Explorer Nuclear Structure and Decay Data
8th Edition of the Table of Isotopes
Isotopes Project Home Page
Lawrence Berkeley National Laboratory