Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
21285At127   Astatine
J(π)=(1-)
T1/2=314.00 ms
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess -8.627788
(0.002432)		 -8.440 -8.420
BE 1653.248 1653.060
BE/A 7.798 7.797
<R2ch>1/2 = 
Charge-density Distribution [6]

β2= 0.011
β3= 0.000
β4= 0.012
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 - decay7817.02
β- - decay31.49
β+ - decay719.22
e-capture1741.22
1p - decay-3484.66
2p - decay-8414.32
1n - decay-5052.26
2n - decay-12798.73
2β- - decay-5111.94
β-,n-7944.04
β-,2n-15165.82
β-,d-9791.80
β-,t-10695.19
β-,α6416.50
β-,n,α-1978.65
EC,p-4058.66
EC,2p-8477.84
EC,α10695.35
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
E = 223 keV
T1/2 = 119.00 ms
α
99%		IT
1%
α-energies
γ-energies
 
μ (nm) Q (b) E* (keV)
5.94(11)888
5.95(12)888
9.46(8)1616
9.33(15)1616
  
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.