Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
21087Fr123   Francium
J(π)=6+
T1/2=3.18 m
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess -3.332504
(0.015164)		 -3.480 -5.690
BE 1630.245 1630.393
BE/A 7.763 7.764
<R2ch>1/2 = 5.5803 ± 0.0176 fm [3]
Charge-density Distribution [6]

β2= -0.063
β3= 0.000
β4= -0.010
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 - decay6671.58
β- - decay-3792.78
β+ - decay5250.00
e-capture6272.00
1p - decay-1692.68
2p - decay-5440.88
1n - decay-7635.85
2n - decay-16809.29
2β- - decay-12122.06
β-,n-13257.87
β-,2n-21190.06
β-,d-13802.36
β-,t-15437.93
β-,α3358.03
β-,n,α-6114.82
EC,p2260.82
EC,2p-441.39
EC,α12430.92
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
γ-energies
 
μ (nm) Q (b) E* (keV)
+0.19(2)0
+4.38(5)0
+4.40(9)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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.