Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
16868Er100   Erbium
J(π)=0+
T1/2=stable
Abundance: 26.978% 18
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess -62.990709
(0.002033)		 -63.080 -0.420
BE 1365.773 1365.862
BE/A 8.130 8.130
<R2ch>1/2 = 5.2644 ± 0.0035 fm [3]
Charge-density Distribution [6]

β2= 0.297
β3= 0.000
β4= -0.002
β6= -0.026
Excited States[1]
click on a plot to process it 		Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay551.05
β- - decay-1677.33
β+ - decay-3952.04
e-capture-2930.04
1p - decay-7998.67
2p - decay-14985.23
1n - decay-7771.29
2n - decay-14207.74
2β- - decay-1409.20
β-,n-8517.92
β-,2n-17245.37
β-,d-11200.80
β-,t-13420.07
β-,α-434.81
β-,n,α-7109.57
EC,p-10348.71
EC,2p-19685.26
EC,α-3338.98
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
  
σ (b)
Capture 2.74
Scattering 8.30
 
μ (nm) Q (b) E* (keV)
2.3(2)821
-2.2(10)264
+0.62(6)80
+0.658(14)80
+1.17(12)264
+1.26(16)264
+1.81(12)549
+2.0(3)549
+0.77(4)821
+0.72(14)821
+2.4(2)928
+2.7(5)928
+0.96(4)1094
+3.1(4)1396
+3.2(8)1396
B(E2)↑ = 5.723 ( 45) e2b2,    β 0  = 0.3361 (13)
2

B(E3)↑ = 0.043 ( 6) e2b3,    β 0  = 0.044 (0)
3

  
[1] National Nuclear Data Center, Evaluated Nuclear Structure Data File, https://www.nndc.bnl.gov/ensdf/.
[2] M. Wang, G. Audi, A.H. Wapstra, F.G. Kondev, M. MacCormick, X. Xu, and B. Pfeiffer, Chinese Physics C, 2012, vol. 36, pp. 1603-2014.
[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.
[4] P. Möller, A.J. Sierk, T. Ichikawa, H. Sagawa, Atomic Data and Nuclear Data Tables, 2016, vol. 109-110, pp. 1-204.
[5] N.J. Stone, https://www-nds.iaea.org/publications/indc/indc-nds-0658/; Atomic Data and Nuclear Data Tables, 2016, vol. 111-112, pp. 1–28.
[6] H. de Vries, C.W. de Jager, C. de Vries, Atomic Data and Nuclear Data Tables, 1987, vol. 36, pp. 495-536.
[7] B. Pritychenko, M. Birch, B. Singh, M. Horoi, Atomic Data and Nuclear Data Tables, 2016, vol. 107, pp. 1–139; 2017, vol. 114, pp. 371–374.
[8] T. Kibedi and R.H. Spear, Atomic Data and Nuclear Data Tables, 2002, vol. 80, pp. 35-82.