Information about Tellurium-137:


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Mass-Energy Data:

Atomic Mass:	136.925325	±	0.000131	amu
Excess Mass (Δ):	-69.559519	±	0.122472	MeV
Binding Energy:	1134.648367	±	0.122473	MeV
β^- Decay Energy:	6.941600	±	0.119282	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: (7/2-)
Half life: 2.49 s ( 2.49 sec., λ = 0.278372 s^-1)
Mode of decay:
β^-
to
137
53
I
(Q = 6.940 MeV)
Mode of decay: β^- +
1
0
n to
136
53
I
(Q = 1.870 MeV) Branch ratio: 2.69 %

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)