Plutonium: Properties


Isotopes
  Natural
Abun. (%)
Atomic
Mass
Half-
life
Decay Mode
/Energy (/MeV)
Part. En.
/Intensity
(MeV/%)
Cross-sect.
Ther. Neut.
(b)
Spin
(h/2 pi)
Magnetic
Dipl.Mom.
(nm)
Electric
Quad. Mom.
(b)
Gamma En.
/Intensity
(MeV/%)
 230Pu       alpha/ 7.05           
 232Pu   232.041169 34m E.C./ 1.1
alpha/ 6.716
 
6.542/ 38
6.6/ 62
 0+      
 233Pu   233.04297 20.9m E.C./ 2
alpha/ 6.416
 
6.3/ 0.1
       0.1503
0.1804
0.2353
0.5002
0.5346
1.0352
 234Pu   234.043299 8.8h E.C./ 0.38
alpha/ 6.31
 
6.035/ 0.024
6.149/ 1.9
6.2/ 4
 0+      
 235Pu   235.04526 25.3m E.C./ 1.12
alpha/ 5.957
 
5.85/ 0.003
 5/2+      
 236Pu   236.046032 2.87y alpha/ 5.867 5.452/ 0.002
5.6139/ 0.18
5.721/ 21
5.7677/ 68
 0+      
 237Pu   237.048401 45.2d E.C./ 0.22
alpha/ 5.747
 
5.334/ 0.0015
5.356/ 0.0006
5.65/ 0.0007
 7/2-     Np L x rays
Np k x rays
0.02634
0.03319
0.05954
0.03 - 0.5
 238Pu   238.049554 87.74y alpha/ 5.593 5.3583/ 0.1
5.465/ 28.3
5.4992/ 71.6
510 b0+     U k x rays
0.04347
0.04 - 1.1
 239Pu   239.052157 2.41x104y alpha/ 5.244 5.0452/ 0.023
5.0752/ 0.056
5.1047/ 10.6
5.1428/ 15.1
5.1555/ 73.2
270 b1/2+ 0.203 nm   U k x rays
0.05162
0.05682
0.12928
0.37502
0.41369
 240Pu   240.053808 6537y alpha/ 5.255 5.0212/ 0.07
5.1237/ 26.4
5.1681/ 73.5
290 b0+     U L x rays
0.04524
0.10423
0.04 - 0.97
 241Pu   241.056845 14.4y -/ 0.021
alpha/ 5.139
4.853/ 0.0003
4.8966/ 0.002
370 b5/2+ -0.683 nm 6 b 0.14854
 242Pu   242.058737 3.76x105y alpha/ 4.983 4.7546/ 0.098
4.8564/ 22.4
4.9006/ 78
19 b0+     U L x rays
0.04491
0.1035
 243Pu   243.061998 4.956h -/ 0.582 0.49/ 21
0.58/ 60
 7/2+     Am L x rays
0.0417
0.0839
 244Pu   244.064199 8.2x107y alpha/ 4.665
S.E.
4.546/ 19.4
4.589/ 80.5
1.7 b0+     U L x rays
0.0439
 245Pu   245.06782 10.5h -/ 1.28 0.93/ 57
1.21/ 11
150 b9/2-     Am L x rays
Am k x rays
0.2804
0.30832
0.32752
0.56014
0.03 - 1.2
 246Pu   246.070171 10.85d -/ 0.4 0.15/ 85
0.35/ 10
 0+     Am L x rays
Am k x rays
0.04379
0.22371