Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
3919K20   Potassium
J(π)=3/2+
T1/2=stable
Abundance: 93.2581% 44
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess -33.80719022
(0.00000458)		 -33.930 2.500
BE 333.724 333.847
BE/A 8.557 8.560
<R2ch>1/2 = 3.4373 ± 0.0224 fm [3]
Charge-density Distribution [6]

β2= -0.032
β3= 0.000
β4= 0.000
β6= -0.010
Excited States[1]
click on a plot to process it 		Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay-7218.55
β- - decay-6524.45
β+ - decay-1587.04
e-capture-565.04
1p - decay-6381.37
2p - decay-16623.67
1n - decay-13077.74
2n - decay-25149.59
2β- - decay-19634.41
β-,n-19819.96
β-,2n-36813.69
β-,d-22142.66
β-,t-31339.89
β-,α-13184.65
β-,n,α-25925.06
EC,p-11298.14
EC,2p-21488.82
EC,α-7385.91
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
  
σ (b)
Capture 2.10
 
μ (nm) Q (b) E* (keV)
+3.3(3)8030
2.4(2)3598
4.0(4)2814
+0.39150731(12)0
+0.3914662(3)0
+0.39147(3)0
+0.0585(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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.