Nucleus[1] Binding energy (MeV) g.s. Radius[3] & Deformation[4]
15261Pm91   Promethium
J(π)=1+
T1/2=4.12 m
  Experiment
[2]		 Theory
[4]		 Sh.corr.
[4]
Mass Excess -71.253533
(0.025936)		 -72.010 0.510
BE 1250.371 1251.127
BE/A 8.226 8.231
<R2ch>1/2 = 
Charge-density Distribution [6]

β2= 0.249
β3= 0.000
β4= 0.112
β6= 0.004
Excited States[1]
click on a plot to process it 		Known and possible Decays[1] Q-values (keV)
roman [2], italic [4]
α - decay-1143.07
β- - decay3508.47
β+ - decay-2126.82
e-capture-1104.82
1p - decay-7600.22
2p - decay-17531.13
1n - decay-5939.44
2n - decay-13799.67
2β- - decay1633.91
β-,n-4749.20
β-,2n-10345.63
β-,d-10792.73
β-,t-10139.62
β-,α3729.41
β-,n,α-3603.07
EC,p-11763.10
EC,2p-20984.72
EC,α-3280.09
Metastable states and Resonances[1] Radiation energies (keV)[1] Thermal neutrons[1] El.-Magn. properties[5,7,8]
 
E = 150 keV
T1/2 = 7.52 m
β-
100%
E = 150 keV
T1/2 = 13.80 m
β-
100%
β- endpoint energies
γ-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[3] I. Angeli, K.P. Marinova, Atomic Data and Nuclear Data Tables, 2013, vol. 99, pp. 69-95; unpublished update, 2016.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.