Information about Europium-150:


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Mass-Energy Data:

Atomic Mass:	149.919698	±	0.000008	amu
Excess Mass (Δ):	-74.800546	±	0.007010	MeV
Binding Energy:	1236.210703	±	0.007013	MeV
β^- Decay Energy:	0.971398	±	0.003557	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: 5(-)
Half life: 36.9 years ( 1.16383×10⁺⁰⁹ sec., λ = 5.95576×10^-10 s^-1)
Mode of decay:
E.C.
to
150
62
Sm
(Q = 2.261 MeV)
Meta state at 0.042 Mev
Spin: 0- 36.9
Half life: 12.8 h ( 46080 sec., λ = 1.50423×10^-05 s^-1)
Mode of decay:
β^-
to
150
64
Gd
(Q = 1.013 MeV) Branch ratio: 89.00 %
Mode of decay:
E.C.
to
150
62
Sm
(Q = 2.303 MeV) Branch ratio: 11.00 %
Mode of decay: γ (IT) to
150
63
Eu
(Q = 8 0.042 MeV) Branch ratio: <=5.0E-8 %

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)

Magnetic Dipole Moments and Electric Quadrupole Moments
Ex(kev)	T_1/2	Spin	m(nm)	Q(b)	Ref. Std.	Method	Reference
0	35.8 y	5(-)	+2.708(11)		[151 Eu]	CFBLS	ZP A321 35 (85)
				+1.13(5)	[151 Eu]	CFBLS	ZP A321 35 (85)

N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published. 2000 Courtesy of T. Burrows at BNL/NNDC.