element

Information about Neodymium-139:


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

Mass-Energy Data:

Atomic Mass:	138.911924	±	0.000054	amu
Excess Mass (Δ):	-82.042114	±	0.050679	MeV
Binding Energy:	1157.014780	±	0.050679	MeV
β^- Decay Energy:	-4.504392	±	0.029096	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: 3/2+
Half life: 29.7 min ( 1782 sec., λ = 0.000388971 s^-1)
Mode of decay:
E.C.
to
139
59
Pr
(Q = 2.790 MeV)
Meta state at 0.231 Mev
Spin: 11/2- 29.7
Half life: 5.50 h ( 19800 sec., λ = 3.50074×10^-05 s^-1)
Mode of decay:
E.C.
to
139
59
Pr
(Q = 3.021 MeV) Branch ratio: 88.20 %
Mode of decay: γ (IT) (Q = 0.231 MeV) Branch ratio: 11.80 %
Possible parent nuclides:
E.C. from
139
61
Pm

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	30 m	3/2+	+0.907(7)		[143Nd]	LRIMS	JP G18 1177 (92)
				+0.28(9) st	[143Nd]	LRIMS	JP G18 1177 (92)

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