Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
20785At122   Astatine
J(π)=9/2-
T1/2=1.81 h
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess -13.226905
(0.01241)		 -13.310 -6.840
BE 1617.491 1617.574
BE/A 7.814 7.814
<R2ch>1/2 = 
Charge-density Distribution [6]

β2= -0.053
β3= 0.000
β4= -0.011
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 - decay5872.43
β- - decay-4592.16
β+ - decay2896.36
e-capture3918.36
1p - decay-2327.54
2p - decay-6740.75
1n - decay-8869.22
2n - decay-16399.25
2β- - decay-10382.50
β-,n-12182.77
β-,2n-21655.62
β-,d-13392.32
β-,t-16301.24
β-,α1658.99
β-,n,α-5798.94
EC,p-488.18
EC,2p-4035.22
EC,α9134.17
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
α-energies
β+ endpoint energies
γ-energies
 
μ (nm) Q (b) E* (keV)
+3.75(13)2117
  
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.