Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
16768Er99   Erbium
J(π)=7/2+
T1/2=stable
Abundance: 22.869% 9
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess -63.290716
(0.002031)		 -63.240 -0.290
BE 1358.001 1357.951
BE/A 8.132 8.131
<R2ch>1/2 = 5.256 ± 0.0031 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 - decay664.24
β- - decay-746.63
β+ - decay-2031.71
e-capture-1009.71
1p - decay-7509.12
2p - decay-14257.42
1n - decay-6436.45
2n - decay-14912.92
2β- - decay-2699.74
β-,n-9474.08
β-,2n-16504.47
β-,d-11905.98
β-,t-12298.89
β-,α661.73
β-,n,α-7746.07
EC,p-7996.27
EC,2p-17302.75
EC,α-1120.88
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
E = 207.801 keV
T1/2 = 2.27 s
IT
100%
γ-energies
σ (b)
Capture 659.00
Scattering 1.60
 
μ (nm) Q (b) E* (keV)
+3.57(3)0
-0.56385(12)0
-0.565(2)0
  
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.