Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
22888Ra140   Radium
J(π)=0+
T1/2=5.75 y
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess 28.942197
(0.0024)		 29.360 0.070
BE 1742.472 1742.054
BE/A 7.642 7.641
<R2ch>1/2 = 5.7572 ± 0.0188 fm [3]
Charge-density Distribution [6]

β2= 0.174
β3= -0.083
β4= 0.099
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 - decay4072.20
β- - decay45.85
β+ - decay-5448.91
e-capture-4426.91
1p - decay-8032.58
2p - decay-14383.00
1n - decay-6308.56
2n - decay-10869.97
2β- - decay2169.94
β-,n-4980.15
β-,2n-11510.86
β-,d-7863.04
β-,t-8001.87
β-,α4722.24
β-,n,α62.05
EC,p-11232.67
EC,2p-20249.84
EC,α-1193.75
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
β- endpoint energies
γ-energies
σ (b)
Capture 36.00
Fission 2.00
 
B(E2)↑ = 5.98 ( 20) e2b2,    β 0  = 0.2167 (36)
2

  
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.