Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
20285At117   Astatine
J(π)=(2+,3+)
T1/2=3.07 m
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess -10.590805
(0.027977)		 -10.150 -2.630
BE 1574.498 1574.057
BE/A 7.795 7.792
<R2ch>1/2 = 
Charge-density Distribution [6]

β2= 0.086
β3= 0.000
β4= -0.009
β6= -0.001
Excited States[1]
click on a plot to process it 		Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay6353.78
β- - decay-4316.48
β+ - decay6311.29
e-capture7333.29
1p - decay-1354.92
2p - decay-4798.13
1n - decay-7872.75
2n - decay-17745.43
2β- - decay-13682.73
β-,n-14589.59
β-,2n-22719.03
β-,d-14738.50
β-,t-16717.14
β-,α2457.25
β-,n,α-7728.90
EC,p3534.82
EC,2p1081.69
EC,α13034.35
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
E = 0+x keV
T1/2 = 3.03 m
α
8.7%		β+, EC
91.3%
E = 391.7 keV
T1/2 = 460.00 ms
α
0.096%		IT
99.9%
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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.