Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
21085At125   Astatine
J(π)=(5)+
T1/2=8.10 h
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess -11.971655
(0.00771)		 -11.760 -9.020
BE 1640.449 1640.237
BE/A 7.812 7.811
<R2ch>1/2 = 
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 - decay5631.20
β- - decay-2367.08
β+ - decay2959.00
e-capture3981.00
1p - decay-2895.08
2p - decay-7679.94
1n - decay-7160.59
2n - decay-15644.63
2β- - decay-8639.08
β-,n-11114.09
β-,2n-18458.99
β-,d-12637.69
β-,t-13694.51
β-,α3791.84
β-,n,α-4958.61
EC,p-1002.54
EC,2p-4801.62
EC,α9388.47
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)
(-)2.16(18)4028
(-)1.21(7)2550
(-)0.64(5)1363
+9.8(3)1363
+15.68(2)2550
15.48(15)2550
15.57(15)2550
13.26(13)4028
14.0(5)4028
  
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.