Information about Promethium-146:


Wikipedia	Neutron Cross Sections	X-Ray Transitions	X-Ray Attenuation

Mass-Energy Data:

Atomic Mass:	145.914692	±	0.000005	amu
Excess Mass (Δ):	-79.463724	±	0.004977	MeV
Binding Energy:	1210.153297	±	0.004981	MeV
β^- Decay Energy:	1.542000	±	0.003000	MeV

"The 1995 update to the atomic mass evaluation" by G.Audi and A.H.Wapstra, Nuclear Physics A595 vol. 4 p.409-480, December 25, 1995.

Radioactive Decay Data:

Spin: 3-
Half life: 5.53 years ( 1.74416×10⁺⁰⁸ sec., λ = 3.9741×10^-09 s^-1)
Mode of decay:
E.C.
to
146
60
Nd
(Q = 1.472 MeV) Branch ratio: 66.00 %
Mode of decay:
β^-
to
146
62
Sm
(Q = 1.542 MeV) Branch ratio: 34.00 %

R.R.Kinsey, et al.,The NUDAT/PCNUDAT Program for Nuclear Data,paper submitted to the 9 th International Symposium of Capture-Gamma_raySpectroscopy and Related Topics, Budapest, Hungary, Octover 1996.Data extracted from NUDAT database (Jan. 14/1999)