Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
21488Ra126   Radium
J(π)=0+
T1/2=2.46 s
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess 0.092896
(0.005227)		 -0.220 -6.140
BE 1658.323 1658.636
BE/A 7.749 7.751
<R2ch>1/2 = 5.6079 ± 0.0177 fm [3]
Charge-density Distribution [6]

β2= 0.000
β3= 0.000
β4= 0.000
β6= 0.000
Excited States[1]
click on a plot to process it 		Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay7272.53
β- - decay-6351.60
β+ - decay29.06
e-capture1051.06
1p - decay-3643.42
2p - decay-5825.86
1n - decay-8336.34
2n - decay-15851.03
2β- - decay-10619.36
β-,n-14134.63
β-,2n-23327.59
β-,d-12844.10
β-,t-15688.89
β-,α1000.54
β-,n,α-6635.31
EC,p-1498.26
EC,2p-5857.35
EC,α9639.62
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
E = 1865.2 keV
T1/2 = 67.30 µs
α
0.09%		β+, EC
99.91%
    
μ (nm) Q (b) E* (keV)
7.08(3)1865
11.98(8)2683
11.94(11)2683
14.29(6)3478
14.31(13)3478
17.36(5)4147
17.48(12)4147
16.5(3)6577
  
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.