element

Information about Europium-140:


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

Mass-Energy Data:

Atomic Mass:	139.928084	±	0.000056	amu
Excess Mass (Δ):	-66.989386	±	0.052174	MeV
Binding Energy:	1147.686315	±	0.052174	MeV
β^- Decay Energy:	-5.460000	±	0.400000	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: 1+
Half life: 1.51 s ( 1.51 sec., λ = 0.459038 s^-1)
Mode of decay:
E.C.
to
140
62
Sm
(Q = 8.400 MeV)
Meta state at 0.185 Mev
Spin: (5-) 1.51
Half life: 125 ms ( 0.125 sec., λ = 5.54518 s^-1)
Mode of decay: γ (IT) (Q = 0.185 MeV)
Mode of decay:
E.C.
to
140
62
Sm
(Q = 8.585 MeV) Branch ratio: <1.00 %
Possible parent nuclides:
E.C. from
140
64
Gd

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 + x	1.54 s	1(+)	+1.365(13)		[151Eu]	CFBLS	ZP A321 35 (85)
				+0.31(4)	[153Eu]	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.