Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
8637Rb49   Rubidium
J(π)=2-
T1/2=18.64 d
  Experiment
[2]
Theory
[4]
Sh.corr.
[4]
Mass Excess -82.74701
(0.000199)
-82.950 0.060
BE 747.934 748.137
BE/A 8.697 8.699
<R2ch>1/2 = 4.203 ± 0.0028 fm [3]
Charge-density Distribution [6]

β2= 0.075
β3= 0.000
β4= -0.022
β6= -0.002
Excited States[1]
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Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay-7674.63
β- - decay1776.22
β+ - decay-503.38
e-capture518.62
1p - decay-8555.68
2p - decay-19541.93
1n - decay-8650.98
2n - decay-19130.65
- - decay-3463.74
β-,n-9715.00
β-,2n-18240.02
β-,d-16123.71
β-,t-18626.15
β--4581.56
β-,n,α-15548.36
EC,p-11460.58
EC,2p-21377.32
EC,α-7578.03
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
E = 556.05 keV
T1/2 = 1.02 m
IT
100%
β-
0.3%
β- endpoint energies
γ-energies
 
μ (nm) Q (b) E* (keV)
+1.815(1)556
-1.698(2)0
-1.6920(14)0
+0.45(14)556
+0.23(6)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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.