Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
13255Cs77   Cesium
J(π)=2+
T1/2=6.48 d
  Experiment
[2]
Theory
[4]
Sh.corr.
[4]
Mass Excess -87.156248
(0.002)
-86.720 -0.270
BE 1109.541 1109.105
BE/A 8.406 8.402
<R2ch>1/2 = 4.8002 ± 0.0046 fm [3]
Charge-density Distribution [6]

β2= 0.140
β3= 0.000
β4= -0.005
β6= -0.001
Excited States[1]
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Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay-1842.44
β- - decay1278.78
β+ - decay1100.68
e-capture2122.68
1p - decay-6031.62
2p - decay-14798.09
1n - decay-7168.67
2n - decay-16399.11
- - decay-3432.55
β-,n-8543.59
β-,2n-16037.08
β-,d-13392.17
β-,t-14606.76
β-279.17
β-,n,α-9330.87
EC,p-7002.50
EC,2p-14381.34
EC,α-587.44
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
β- endpoint energies
β+ endpoint energies
γ-energies
 
μ (nm) Q (b) E* (keV)
+2.23(1)0
+2.222(7)0
+0.48(2)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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.