Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
22893Np135   Neptunium
J(π)=
T1/2=1.02 m
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess 33.59607
(0.050575)		 33.880 -0.350
BE 1733.906 1733.622
BE/A 7.605 7.604
<R2ch>1/2 = 
Charge-density Distribution [6]

β2= 0.164
β3= -0.138
β4= 0.087
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 - decay7308.52
β- - decay-2482.98
β+ - decay3351.68
e-capture4373.68
1p - decay-2715.28
2p - decay-7015.40
1n - decay-7037.59
2n - decay-15323.53
2β- - decay-8889.93
β-,n-10751.26
β-,2n-17752.56
β-,d-12316.59
β-,t-12941.49
β-,α5457.16
β-,n,α-2738.98
EC,p-524.98
EC,2p-4179.32
EC,α11177.19
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
       
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.