Information about Tellurium-123:


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Mass-Energy Data:

Atomic Mass:	122.904273	±	0.000002	amu
Excess Mass (Δ):	-89.169158	±	0.001808	MeV
Binding Energy:	1041.259487	±	0.001816	MeV
β^- Decay Energy:	-1.234222	±	0.003155	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:

Atomic Percent Abundance: 0.908%
Spin: 1/2+
Half life: >10000000000000 years ( 0 sec., λ = inf s^-1)
Mode of decay:
E.C.
to
123
51
Sb
(Q = 0.051 MeV)
Meta state at 0.248 Mev
Spin: 11/2- >10000000000000
Half life: 119.7 days ( 1.03421×10⁺⁰⁷ sec., λ = 6.7022×10^-08 s^-1)
Mode of decay: γ (IT) (Q = 0.248 MeV)
Possible parent nuclides:
E.C. from
123
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	>1x10*15 y	1/2+	-0.7369478(8)		[125Te]	N	ZNat 32a 1263 (77)/PR 89 923 (53)
159	0.2 ns	3/2+	0.72(12)			IPAC	ZP A240 396 (70)
247	119.7 d	11/2-	-0.927(8)		[125Te 36]	NMR/ON	PR 36 2097 (87)/NP A210 307 (73)
440	27 ps	3/2+	+0.5(2)			TF	HFI 43 457 (88)
			+0.51(9)			IMPAC	NP A236 165 (74)
489	30.7 ns	7/2+	+0.787(14)			TDPAD	HFI 9 71 (81)/RRou 26 239 (81)
506	18 ps	5/2+	+0.1(2)			TF	HFI 43 457 (88)
			+0.10(6)			IMPAC	NP A236 165 (74)

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