element

Information about Cesium-123:


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

Mass-Energy Data:

Atomic Mass:	122.912990	±	0.000013	amu
Excess Mass (Δ):	-81.049124	±	0.012216	MeV
Binding Energy:	1030.792392	±	0.012217	MeV
β^- Decay Energy:	-5.458000	±	0.298000	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: 1/2+
Half life: 5.87 min ( 352.2 sec., λ = 0.00196805 s^-1)
Mode of decay:
E.C.
to
123
54
Xe
(Q = 4.200 MeV)
Meta state at 0.157 Mev
Spin: 11/2)- 5.87
Half life: 1.64 s ( 1.64 sec., λ = 0.422651 s^-1)
Mode of decay: γ (IT) (Q = 0.157 MeV)
Possible parent nuclides:
E.C. from
123
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	5.8 m	1/2+	+1.377(7)		[133Cs]	ABLS	NP A468 1 (87)
			+1.39(2)		[133Cs]	AB	NP A292 144 (77)

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