Isotopes of Protactinium (Z=91)
Click on an isotope to get more information about its decay
| Isotope
| Half-life
| Spin
Parity
| Decay Mode(s) or
Abundance |
|---|
| 212Pa
| 5.1 ms | (3+) |
%A=?
|
|---|
| 213Pa
| 5.3 ms | |
%A=?
|
|---|
| 214Pa
| 17 ms | |
%A=?
|
|---|
| 215Pa
| 14 ms | |
%A=100
|
|---|
| 216Pa
| 0.20 s | |
%EC ~ 2 sys %A ~ 98 sys
|
|---|
| 217Pa
| 4.9 ms | |
%A =100
|
|---|
| 217m1Pa
| 1.6 ms | |
%A < 100
|
|---|
| 218Pa
| 0.12 ms | |
%A=100
|
|---|
| 219Pa
| 53 ns | 9/2- |
%A=100, %EC+%B+ ~ 5E-9
|
|---|
| 220Pa
| 0.78 us | |
%A=100, %EC+%B+=3E-7 sys
|
|---|
| 221Pa
| 5.9 us | 9/2- |
%A=100
|
|---|
| 222Pa
| 2.9 ms | |
%A=100
|
|---|
| 223Pa
| 6.5 ms | |
%A=100, %EC+%B+ < 1.0E-3
|
|---|
| 224Pa
| 0.79 s | |
%A=100
|
|---|
| 225Pa
| 1.7 s | |
%A=100
|
|---|
| 226Pa
| 1.8 m | |
%A=74 5, %EC+%B+=26 5
|
|---|
| 227Pa
| 38.3 m | (5/2-) |
%A=85 2, %EC=15 2
|
|---|
| 228Pa
| 22 h | 3+ |
%EC+%B+=98.0 2, %A=2.0 2
|
|---|
| 229Pa
| 1.50 d | (5/2+) |
%EC=99.52 5 , %A=0.48 5
|
|---|
| 230Pa
| 17.4 d | (2-) |
%EC+%B+=91.6 13, %B-=8.4 13, %A=0.0032 1
|
|---|
| 231Pa
| 32760 y | 3/2- |
%A=100, %SF < 1.6E-11
|
|---|
| 232Pa
| 1.31 d | (2-) |
%B-=99.997 1, %EC=0.003 1
|
|---|
| 233Pa
| 26.967 d | 3/2- |
%B-=100
|
|---|
| 234Pa
| 6.70 h | 4+ |
%B-=100, %SF < 3E-10
|
|---|
| 234m1Pa
| 1.17 m | (0-) |
%B-=99.84 4, %IT=0.16 4, %SF < 1E-9
|
|---|
| 235Pa
| 24.5 m | (3/2-) |
%B-=100
|
|---|
| 236Pa
| 9.1 m | 1(-) |
%B-=100
|
|---|
| 237Pa
| 8.7 m | (1/2+) |
%B-=100
|
|---|
| 238Pa
| 2.3 m | (3-) |
%B-=100, %SF < 2.6E-6
|
|---|
| 239Pa
| | |
|
|---|
| 240Pa
| | |
|
|---|
Last update on
February 15, 2012
