Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
21084Po126   Polonium
J(π)=0+
T1/2=138.38 d
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess -15.952695
(0.00124)		 -15.980 -10.530
BE 1645.212 1645.240
BE/A 7.834 7.834
<R2ch>1/2 = 5.5704 ± 0.0185 fm [3]
Charge-density Distribution [6]

β2= 0.000
β3= 0.000
β4= 0.000
β6= 0.000
Excited States[1]
click on a plot to process it 		Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay5407.47
β- - decay-3981.01
β+ - decay-2183.26
e-capture-1161.26
1p - decay-4983.54
2p - decay-8782.62
1n - decay-7658.42
2n - decay-14626.14
2β- - decay-6348.09
β-,n-11141.60
β-,2n-19625.63
β-,d-11619.21
β-,t-13757.16
β-,α1650.20
β-,n,α-5384.70
EC,p-5627.61
EC,2p-13781.54
EC,α3875.21
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
α-energies
γ-energies
 
μ (nm) Q (b) E* (keV)
(-)1.30(2)5058
(-)0.90(7)4372
(-)0.86(11)2849
[-0.55(2)]1557
5.48(5)1473
+7.35(5)1557
+12.20(9)2849
6.8(2)4372
9.84(8)5058
B(E2)↑ = 0.02 ( 40) e2b2,    β 0  = 0.0138 (14)
2

B(E3)↑ = 0.53 ( 8) e2b3,    β 0  = 0.1 (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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.