Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
22187Fr134   Francium
J(π)=5/2-
T1/2=4.90 m
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess 13.2786
(0.005018)		 13.520 -1.800
BE 1702.419 1702.177
BE/A 7.703 7.702
<R2ch>1/2 = 5.692 ± 0.0173 fm [3]
Charge-density Distribution [6]

β2= 0.111
β3= -0.140
β4= 0.081
β6= 0.017
Excited States[1]
click on a plot to process it 		Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay6457.77
β- - decay314.40
β+ - decay-2216.13
e-capture-1194.13
1p - decay-4623.96
2p - decay-11696.59
1n - decay-6275.88
2n - decay-11482.58
2β- - decay-1244.79
β-,n-5063.20
β-,2n-12258.53
β-,d-8475.65
β-,t-8730.63
β-,α7194.81
β-,n,α2529.20
EC,p-8386.18
EC,2p-13980.79
EC,α4968.34
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
α-energies
γ-energies
 
μ (nm) Q (b) E* (keV)
-0.98(6)0
+1.58(3)0
  
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.