Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
20281Tl121   Thallium
J(π)=2-
T1/2=12.31 d
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess -25.986409
(0.014285)		 -25.710 -8.980
BE 1593.023 1592.746
BE/A 7.886 7.885
<R2ch>1/2 = 5.4595 ± 0.0027 fm [3]
Charge-density Distribution [6]

β2= -0.053
β3= 0.000
β4= -0.011
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 - decay1170.69
β- - decay-46.15
β+ - decay337.05
e-capture1359.05
1p - decay-5612.68
2p - decay-13324.22
1n - decay-6878.78
2n - decay-15081.46
2β- - decay-5245.56
β-,n-8798.28
β-,2n-15878.44
β-,d-12074.52
β-,t-12876.78
β-,α2543.57
β-,n,α-5941.54
EC,p-6874.56
EC,2p-13963.59
EC,α1494.34
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)
0.06(1)0
+0.90(4)950
  
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.