Einstânio: 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/%)
243Es   243.06947 21s alpha,C.E./ 3.8 7.89         
244Es   244.07081 37s C.E./ 4.5
alpha

7.57/ 4
        
245Es   245.07126 1.3m alpha/ 7.858
C.E./ 3
7.74         
246Es   246.07292 7.7m C.E./ 3.8
alpha

7.35
        
247Es   247.07359 4.8m C.E./ 2.42
alpha

7.32
        
248Es   248.07544 26m C.E./ 3.05
alpha

6.87
        
249Es   249.07634 1.7h C.E./ 1.39
alpha

6.77
 7/2+     0.3795
0.8132
250mEs     2.2h C.E.,ß+    1-     Cf L x rays
Cf k x rays
0.9891
1.0319
250Es   250.07866 8.6h C.E./ 2.1    6+     Cf L x rays
Cf k x rays
0.30339
0.34948
0.82883
251Es   251.079986 1.38d C.E./ 0.38
alpha

6.462/ 0.05
6.492/ 0.4
 3/2-      
252Es   252.082944 1.29a alpha,C.E./ 1.26 6.632/ 61
6.562/ 10.3
 5-      
253Es   253.084818 20.47d alpha 6.633/ 89.8
6.5916/ 6.6
186 b7/2+ 4.1 nm 7 b 0.0418
0.3892
254mEs     1.64d ß-,alpha/ 6.67 0.475
6.382
 2+ 2.9 nm 3.7 b Fm L x rays
Fm k x rays
0.6488
0.6938
254Es   254.088019 276d alpha 6.429 28 b7+     0.064
255Es   255.09027 40d ß-/ 0.3
alpha

6.26
55 b7/2+      
256mEs     7.6h ß-    8+     0.218
0.232
0.862
256Es   256.09356 25m ß-/ 1.7    1+