Information about Xenon-139:


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

Mass-Energy Data:

Atomic Mass:	138.918787	±	0.000023	amu
Excess Mass (Δ):	-75.649542	±	0.021101	MeV
Binding Energy:	1155.316329	±	0.021102	MeV
β^- Decay Energy:	5.057023	±	0.020655	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: 39.68 s ( 39.68 sec., λ = 0.0174684 s^-1)
Mode of decay:
β^-
to
139
55
Cs
(Q = 5.057 MeV)
Possible parent nuclides:
β^- from
139
53
I

β^- +
1
0
n from
140
53
I

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	39.7 s	3/2-	-0.304(10)		"[129,131Xe]"	CFBLS	PL B216 7 (89)
				+0.40(2)	[131Xe]	CFBLS	PL B216 7 (89)

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