Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
23491Pa143   Protactinium
J(π)=4+
T1/2=6.70 h
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess 40.340361
(0.004714)		 40.680 -1.120
BE 1777.155 1776.815
BE/A 7.595 7.593
<R2ch>1/2 = 
Charge-density Distribution [6]

β2= 0.215
β3= 0.000
β4= 0.106
β6= 0.001
Excited States[1]
click on a plot to process it 		Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay4077.08
β- - decay2193.57
β+ - decay-1296.12
e-capture-274.12
1p - decay-5682.28
2p - decay-13392.06
1n - decay-5220.98
2n - decay-11750.21
2β- - decay383.76
β-,n-4651.16
β-,2n-10413.07
β-,d-8743.28
β-,t-8035.36
β-,α7051.25
β-,n,α257.42
EC,p-8256.71
EC,2p-14734.63
EC,α3399.12
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
E = 73.92 keV
T1/2 = 1.16 m
β-
99.84%		IT
0.16%
β- endpoint energies
γ-energies
σ (b)
Fission 5000.00
 		   
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.