Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
21284Po128   Polonium
J(π)=0+
T1/2=299.00 ns
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess -10.36904
(0.001246)		 -10.580 -8.580
BE 1655.771 1655.982
BE/A 7.810 7.811
<R2ch>1/2 = 
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 - decay8954.13
β- - decay-1741.22
β+ - decay-3274.06
e-capture-2252.06
1p - decay-5799.88
2p - decay-10219.06
1n - decay-6008.21
2n - decay-10558.94
2β- - decay-1709.73
β-,n-6793.48
β-,2n-14539.95
β-,d-7552.01
β-,t-8953.23
β-,α6075.81
β-,n,α-811.09
EC,p-7166.78
EC,2p-15701.03
EC,α3955.22
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
E = 727.33 keV
T1/2 = -1
α
0.033%
E = 1132.53 keV
T1/2 = -1
α
27%
E = 1249 keV
T1/2 = -1
α
100%
E = 1355.53 keV
T1/2 = 760.00 ps
α
71%
E = 1476.43 keV
T1/2 = 17.10 ns
α
42%
E = 1547 keV
T1/2 = -1
α
100%
E = 1578 keV
T1/2 = -1
α
100%
E = 1612 keV
T1/2 = -1
α
100%
E = 1657 keV
T1/2 = -1
α
100%
E = 1679.45 keV
T1/2 = -1
α
0.3%
E = 1800.9 keV
T1/2 = -1
α
26%
E = 1805.96 keV
T1/2 = -1
α
1.6%
E = 2922 keV
T1/2 = 45.10 s
α
99.93%
α-energies
γ-energies
    
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.