Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
21188Ra123   Radium
J(π)=5/2(-)
T1/2=13.00 s
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess 0.832024
(0.007918)		 0.700 -4.840
BE 1633.370 1633.502
BE/A 7.741 7.742
<R2ch>1/2 = 5.5903 ± 0.0178 fm [3]
Charge-density Distribution [6]

β2= -0.073
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 - decay7041.84
β- - decay-6370.16
β+ - decay3949.81
e-capture4971.81
1p - decay-3124.47
2p - decay-4817.15
1n - decay-7699.59
2n - decay-17164.67
2β- - decay-13074.62
β-,n-16028.87
β-,2n-24154.85
β-,d-14157.74
β-,t-15832.73
β-,α1251.50
β-,n,α-8421.65
EC,p3147.52
EC,2p-863.65
EC,α11633.99
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
α-energies
 
μ (nm) Q (b) E* (keV)
+0.46(4)0
+0.878(4)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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.