element

Information about Europium-146:


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

Mass-Energy Data:

Atomic Mass:	145.917200	±	0.000008	amu
Excess Mass (Δ):	-77.127958	±	0.007162	MeV
Binding Energy:	1206.252823	±	0.007165	MeV
β^- Decay Energy:	-1.029888	±	0.007725	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: 4-
Half life: 4.61 days ( 398304 sec., λ = 1.74025×10^-06 s^-1)
Mode of decay:
E.C.
to
146
62
Sm
(Q = 3.878 MeV)
Meta state at 0.666 Mev
Spin: 9+ 4.61
Half life: 235 µs ( 0.000235 sec., λ = 2949.56 s^-1)
Mode of decay: γ (IT) to
146
63
Eu
(Q = 0.666 MeV)
Possible parent nuclides:
E.C. from
146
64
Gd

α from
150
65
Tb

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	4.59 d	4-	+1.421(8)		[151Eu]	CFBLS	Cf93Bern 209(93)
			+1.425(11)		[151 Eu]	CFBLS	ZP A321 35 (85)
			1.3(2)			NO/S	Phca 133B 138 (85)
			1.7(3)			NO/S	HFI 15 73 (83)
				Q/Q(153Eu) = -0.074(2)	[153Eu]	CFBLS	Cf93Bern 209(93)
				-0.18(6)	[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.