Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
21791Pa126   Protactinium
J(π)=
T1/2=3.60 ms
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess 17.069966
(0.052308)		 16.580 -3.730
BE 1663.213 1663.703
BE/A 7.665 7.667
<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 - decay8488.80
β- - decay-5901.00
β+ - decay3829.80
e-capture4851.80
1p - decay-517.64
2p - decay-3539.00
1n - decay-8801.17
2n - decay-16941.42
2β- - decay-13979.93
β-,n-14231.26
β-,2n-24142.56
β-,d-13934.48
β-,t-17365.24
β-,α2527.09
β-,n,α-5524.07
EC,p1636.43
EC,2p-42.12
EC,α14287.10
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
E = 1850 keV
T1/2 = 1.20 ms
α
73%		IT
27%
α-energies
    
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.