Information about Lanthanum-140:


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

Mass-Energy Data:

Atomic Mass:	139.909473	±	0.000003	amu
Excess Mass (Δ):	-84.325762	±	0.003215	MeV
Binding Energy:	1169.716811	±	0.003221	MeV
β^- Decay Energy:	3.761853	±	0.001884	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: 1.6781 days ( 144988 sec., λ = 4.78073×10^-06 s^-1)
Mode of decay:
β^-
to
140
58
Ce
(Q = 3.762 MeV)
Possible parent nuclides:
β^- from
140
56
Ba

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	40.3 h	3-	+0.730(15)		[139La]	AB	Cf69Mont 91 (69)
				+0.094(10) st	[139La]	"NO/S, AB"	PR A143 911 (66)/PR A3 25 (71)

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