Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
21184Po127   Polonium
J(π)=9/2+
T1/2=516.00 ms
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess -12.432126
(0.001342)		 -12.400 -9.560
BE 1649.763 1649.731
BE/A 7.819 7.819
<R2ch>1/2 = 5.5798 ± 0.0187 fm [3]
Charge-density Distribution [6]

β2= -0.011
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 - decay7594.50
β- - decay-785.26
β+ - decay-1596.00
e-capture-574.00
1p - decay-4929.66
2p - decay-9396.00
1n - decay-4550.73
2n - decay-12209.16
2β- - decay-3677.05
β-,n-8531.74
β-,2n-15692.33
β-,d-9202.22
β-,t-9912.74
β-,α5197.12
β-,n,α-2900.53
EC,p-4993.18
EC,2p-13372.49
EC,α6176.34
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
E = 1462 keV
T1/2 = 25.20 s
α
99.984%		IT
0.016%
E = 2135 keV
T1/2 = 243.00 ns
IT
100%
E = 4872 keV
T1/2 = 2.80 µs
IT
100%
α-energies
γ-energies
 
μ (nm) Q (b) E* (keV)
-0.38(15)1065
  
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.