Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
12556Ba69   Barium
J(π)=1/2(+)
T1/2=3.30 m
  Experiment
[2]
Theory
[4]
Sh.corr.
[4]
Mass Excess -79.668965
(0.010992)
-79.770 2.550
BE 1044.773 1044.874
BE/A 8.358 8.359
<R2ch>1/2 = 4.8177 ± 0.0052 fm [3]
Charge-density Distribution [6]

β2= 0.264
β3= 0.000
β4= -0.022
β6= -0.019
Excited States[1]
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Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay387.12
β- - decay-5909.45
β+ - decay3396.84
e-capture4418.84
1p - decay-5226.63
2p - decay-8998.27
1n - decay-8650.49
2n - decay-20156.61
- - decay-13010.89
β-,n-17481.62
β-,2n-27160.53
β-,d-17149.68
β-,t-20009.79
β--4991.50
β-,n,α-16276.49
EC,p703.05
EC,2p-6303.29
EC,α4157.74
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
   
μ (nm) Q (b) E* (keV)
+0.177(12)0
0.1736(10)0+x
  
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.