Urânio: Propriedades


Isótopos

  Abund.
Nat. (%)
Massa
Atómica
Meia-
vida
Modo de Dec.
/Energia (/MeV)
En. da Part.
/Intensidade
(MeV/%)
Seccão Ef.
Neut. Term.
(b)
Spin
(h/2 pi)
Mom. Dip.
Magnético
(nm)
Mom. Quad.
Eléctrico
(b)
En. dos Gamas
/Intensidade
(MeV/%)
222U     1µs alpha           
225U     0.08s alpha 7.88/ 90         
226U   226.02917 0.5s alpha/ 7.56 7.43  0+      
227U   227.03099 1.1m alpha/ 7.2 6.87         
228U   228.031356 9.1m alpha/ 6.803 6.404/ 0.6
6.44/ 0.7
6.589/ 29
6.81/ 70
 0+     0.095
0.152
0.187
0.246
229U   229.033474 58m C.E./ 1.305
alpha/ 6.473
6.223/ 3
6.297/ 11
6.332/ 20
6.23/ 64
 3/2+      
230U   230.033921 20.8d alpha/ 5.992 5.5866/ 0.01
5.6624/ 0.26
5.6663/ 0.38
5.8178/ 32
5.8887/ 67
5.8887/ 670+     Th L x rays
0.07218
0.15421
0.23034
231U   231.03627 4.2d C.E./ 0.33    5/2-     Pa L x rays
Th L x rays
0.02564
0.0842
232U   232.03713 68.9a alpha/ 5.414 4.9979/ 0.003
5.1367/ 0.3
5.2635/ 31
5.3203/ 69
73 b0+      
233U   233.039628 1.59x105a alpha/ 4.909 4.783/ 13.2
4.8247/ 84.4
4.51/ 4.804
47 b5/2+ 0.59 nm 3.66 b Th L x rays
0.04244
0.09714
234U 0.0055 % 234.040946 2.45x105a alpha/ 4.856 4.604/ 0.24
4.7231/ 27.5
4.776/ 72.5
96 b0+     0.05323
0.12091
235mU     26m T.I./ 0.0007    1/2+      
235U 0.72 % 235.043924 7.04x108a alpha/ 4.6793 4.2157/ 5.7
4.3641/ 11
4.37/ 6
4.3952/ 55
4.597/ 5
95 b7/2- -0.38 nm 4.6 b Th L x rays
Th k x rays
0.10917
0.14378
0.16338
0.18574
0.20213
0.20533
0.2214
236U   236.045562 2.34x107a alpha/ 4.569 4.332/ 0.26
4.445/ 26
4.494/ 74
5.1 b0+     Th L x rays
0.04937
0.11275
237U   237.048724 6.75d ß-/ 0.519 0.24
0.25
100 b1/2+     Np L x rays
Np k x rays
0.05953
0.20801
238U 99.2745 % 238.050784 4.46x109a alpha 4.039/ 0.23
4.147/ 23
4.196/ 77
2.7 b0+     Th L x rays
0.04955
239U   239.054289 23.5m ß-/ 1.264 1.2
1.3
22 b5/2+     0.04354
0.07467
240U   240.056587 14.1h ß-/ 0.39 0.36  0+     Np L x rays
0.0441
0.05558
0.0676
242U     16.8m ß-/ 1.2