Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
14861Pm87   Promethium
J(π)=1-
T1/2=5.37 d
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess -76.865073
(0.005829)		 -77.050 0.940
BE 1223.697 1223.882
BE/A 8.268 8.269
<R2ch>1/2 = 
Charge-density Distribution [6]

β2= 0.184
β3= -0.069
β4= 0.063
β6= 0.002
Excited States[1]
click on a plot to process it 		Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay1460.44
β- - decay2471.03
β+ - decay-479.30
e-capture542.70
1p - decay-6007.44
2p - decay-14762.35
1n - decay-5894.44
2n - decay-13553.47
2β- - decay-565.63
β-,n-5670.33
β-,2n-12011.43
β-,d-10546.53
β-,t-10547.52
β-,α4457.92
β-,n,α-3359.10
EC,p-8710.10
EC,2p-15808.04
EC,α1141.76
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
E = 137.9 keV
T1/2 = 41.29 d
β-
95.8%		IT
4.2%
β- endpoint energies
γ-energies
σ (b)
Capture 2000.00
 
μ (nm) Q (b) E* (keV)
+0.2(2)0
+2.1(2)0
1.8(2)0
1.8(2)137
  
[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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.