Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
21789Ac128   Actinium
J(π)=9/2-
T1/2=69.00 ns
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess 8.703762
(0.011391)		 8.790 -3.400
BE 1673.144 1673.057
BE/A 7.710 7.710
<R2ch>1/2 = 
Charge-density Distribution [6]

β2= 0.000
β3= 0.000
β4= 0.000
β6= 0.000
Excited States[1]
click on a plot to process it 		Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay9831.54
β- - decay-3514.33
β+ - decay1794.01
e-capture2816.01
1p - decay-1876.60
2p - decay-6192.66
1n - decay-7512.04
2n - decay-13469.81
2β- - decay-8366.13
β-,n-9666.11
β-,2n-18360.36
β-,d-10462.87
β-,t-12690.53
β-,α5920.96
β-,n,α-1593.73
EC,p-1556.61
EC,2p-4706.08
EC,α11976.71
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
E = 1146.7 keV
T1/2 = -1
IT
99.7%		α
0.34%
E = 1149.2 keV
T1/2 = -1
IT
98.3%		α
1.7%
E = 1498.2 keV
T1/2 = -1
IT
99%		α
0.98%
E = 1528.5 keV
T1/2 = 10.00 ns
IT
99.6%		α
0.48%
E = 2013 keV
T1/2 = 740.00 ns
IT
95.7%		α
4.3%
α-energies
 
μ (nm) Q (b) E* (keV)
+3.83(5)0
+5.03(7)2013
  
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.