Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
22688Ra138   Radium
J(π)=0+
T1/2=1.60e+3 y
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess 23.669571
(0.002308)		 24.190 -0.150
BE 1731.602 1731.081
BE/A 7.662 7.660
<R2ch>1/2 = 5.7389 ± 0.0185 fm [3]
Charge-density Distribution [6]

β2= 0.164
β3= -0.112
β4= 0.098
β6= 0.010
Excited States[1]
click on a plot to process it 		Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay4870.64
β- - decay-640.88
β+ - decay-4893.02
e-capture-3871.02
1p - decay-7440.23
2p - decay-13353.53
1n - decay-6396.03
2n - decay-11300.36
2β- - decay472.29
β-,n-6040.29
β-,2n-12707.99
β-,d-8293.42
β-,t-8515.00
β-,α4894.94
β-,n,α-105.19
EC,p-10153.61
EC,2p-18619.48
EC,α291.61
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
α-energies
γ-energies
σ (b)
Capture 12.80
Fission 0.00
 
B(E2)↑ = 5.16 ( 13) e2b2,    β 0  = 0.2024 (25)
2

B(E3)↑ = 1.14 ( 6) e2b3,    β 0  = 0.13 (0)
3

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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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