Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
84Be4   Beryllium
J(π)=0+
T1/2=0.082 fs
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess 4.941671
(0.000035)		    
BE 56.500  
BE/A 7.062  
<R2ch>1/2 = 
Charge-density Distribution [6]

β2=
β3=
β4=
β6=
Excited States[1]
click on a plot to process it 		Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay91.86
β- - decay-17979.87
β+ - decay-17026.17
e-capture-16004.17
1p - decay-17254.43
2p - decay-27228.42
1n - decay-18898.63
2n - decay-29575.96
2β- - decay-30122.53
β-,n-30806.14
β-,2n-58520.89
β-,d-26569.03
β-,t-47147.09
β-,α-22806.38
β-,n,α-34221.49
EC,p-28420.49
EC,2p-51512.08
EC,α-22104.39
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
E = 3030 keV
T1/2 = 1.513 MeV
α
100%
E = 11350 keV
T1/2 = 3.500 MeV
α
100%
E = 16626 keV
T1/2 = 0.108 MeV
IT
0.00265%		α
100%
E = 16922 keV
T1/2 = 0.074 MeV
IT
0.00389%		α
100%
E = 17640 keV
T1/2 = 0.011 MeV
IT
0.204%		p
99.8%
E = 18150 keV
T1/2 = 0.138 MeV
IT
0.0046%		p
100%
E = 18910 keV
T1/2 = 0.122 MeV
IT
0.00022%
E = 19069 keV
T1/2 = 0.271 MeV
IT
0.00387%		p
100%
E = 19235 keV
T1/2 = 0.227 MeV
n
50%		p
50%
E = 19860 keV
T1/2 = 0.700 MeV
p
30%		α
70%
E = 20200 keV
T1/2 = 0.720 MeV
α
50%
E = 27494.1 keV
T1/2 = 0.005 MeV
IT
0.6%		n
39.4%		p
6.9%
27%		α
7.9%
       
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.