Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
12255Cs67   Cesium
J(π)=1+
T1/2=21.18 s
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess -78.144759
(0.033687)		 -78.410 2.700
BE 1019.817 1020.082
BE/A 8.359 8.361
<R2ch>1/2 = 4.7773 ± 0.007 fm [3]
Charge-density Distribution [6]

β2= 0.262
β3= 0.000
β4= 0.002
β6= -0.013
Excited States[1]
click on a plot to process it 		Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay401.39
β- - decay-3535.78
β+ - decay6188.18
e-capture7210.18
1p - decay-2952.77
2p - decay-8969.57
1n - decay-9113.73
2n - decay-20398.72
2β- - decay-13601.69
β-,n-15471.19
β-,2n-25398.69
β-,d-17391.79
β-,t-20789.47
β-,α-2490.57
β-,n,α-14455.59
EC,p817.85
EC,2p-3354.61
EC,α7127.09
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
E = 127.07 keV
T1/2 = 360.00 ms
IT
100%
E = 140 keV
T1/2 = 3.70 m
β+, EC
100%
β+ endpoint energies
γ-energies
 
μ (nm) Q (b) E* (keV)
+5.41(3)(0)
0.133(2)(0)
-0.1333(9)(0)
+3.09(8)0
-0.179(10)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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.