Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
22790Th137   Thorium
J(π)=(1/2+)
T1/2=18.70 d
  Experiment
[2]
Theory
[4]
Sh.corr.
[4]
Mass Excess 25.806321
(0.002499)
26.080 -0.510
BE 1735.972 1735.698
BE/A 7.647 7.646
<R2ch>1/2 = 5.7404 ± 0.0165 fm [3]
Charge-density Distribution [6]

β2= 0.164
β3= -0.138
β4= 0.087
β6= 0.000
Excited States[1]
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Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay6146.61
β- - decay-1025.66
β+ - decay-1066.80
e-capture-44.80
1p - decay-5793.17
2p - decay-10765.98
1n - decay-5462.33
2n - decay-12646.83
- - decay-3215.96
β-,n-8298.41
β-,2n-14677.12
β-,d-9639.89
β-,t-9137.39
β-5554.76
β-,n,α-1311.59
EC,p-5152.28
EC,2p-12592.51
EC,α4997.41
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
α-energies
γ-energies
σ (b)
Fission 202.00
 
  
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.