Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
22588Ra137   Radium
J(π)=1/2+
T1/2=14.90 d
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess 21.994303
(0.002949)		 22.350 -0.630
BE 1725.206 1724.850
BE/A 7.668 7.666
<R2ch>1/2 = 5.7317 ± 0.0184 fm [3]
Charge-density Distribution [6]

β2= 0.154
β3= -0.139
β4= 0.085
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 - decay5096.71
β- - decay355.74
β+ - decay-2848.53
e-capture-1826.53
1p - decay-7089.79
2p - decay-12973.44
1n - decay-4904.32
2n - decay-11383.10
2β- - decay-316.18
β-,n-6311.96
β-,2n-11974.96
β-,d-8376.17
β-,t-7277.04
β-,α6290.84
β-,n,α14.96
EC,p-7739.83
EC,2p-16011.74
EC,α2786.64
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
β- endpoint energies
γ-energies
 
μ (nm) Q (b) E* (keV)
-0.7338(15)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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.