Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
22987Fr142   Francium
J(π)=
T1/2=50.20 s
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess 35.674357
(0.013972)		 35.980 0.210
BE 1744.593 1744.288
BE/A 7.618 7.617
<R2ch>1/2 = 5.77 ± 0.0171 fm [3]
Charge-density Distribution [6]

β2= 0.194
β3= 0.000
β4= 0.102
β6= 0.009
Excited States[1]
click on a plot to process it 		Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay2854.46
β- - decay3125.88
β+ - decay-4710.08
e-capture-3688.08
1p - decay-6858.11
2p - decay-16386.64
1n - decay-5766.02
2n - decay-10154.02
2β- - decay4976.22
β-,n-1339.10
β-,2n-7647.67
β-,d-7147.09
β-,t-6815.96
β-,α6715.35
β-,n,α2733.09
EC,p-13298.68
EC,2p-21184.68
EC,α-1280.58
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
       
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.