Information about Cesium-136:


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Mass-Energy Data:

Atomic Mass:	135.907306	±	0.000004	amu
Excess Mass (Δ):	-86.344134	±	0.003511	MeV
Binding Energy:	1141.014598	±	0.003517	MeV
β^- Decay Energy:	2.548224	±	0.001857	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: 5+
Half life: 13.16 days ( 1.13702×10⁺⁰⁶ sec., λ = 6.09615×10^-07 s^-1)
Mode of decay:
β^-
to
136
56
Ba
(Q = 2.548 MeV)
Meta state at 0.000 Mev
Spin: 8- 13.16
Half life: 19 s ( 19 sec., λ = 0.0364814 s^-1)
Mode of decay:
β^-
to
136
56
Ba
(Q = 2.548 MeV)
Mode of decay: γ (IT) to
136
55
Cs
Branch ratio: >0.00 %

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	13.2 d	5+	+3.711(15)			OL	NP A248 157 (75)
			+3.71(2)		[133Cs]	ABLS	NP A367 1 (81)
				+0.225(10) st		OL	NP A248 157 (75)
				+0.17(6) st		ABLS	NP A367 1 (81)
0+x	19 s	8-	+1.319(7)		[133Cs]	ABLS	NP A367 1 (81)
				+0.74(10)		ABLS	NP A367 1 (81)

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