Information about Niobium-90:


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Mass-Energy Data:

Atomic Mass:	89.911264	±	0.000005	amu
Excess Mass (Δ):	-82.656938	±	0.004554	MeV
Binding Energy:	776.999501	±	0.004556	MeV
β^- Decay Energy:	-2.489000	±	0.004000	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: 8+
Half life: 14.60 h ( 52560 sec., λ = 1.31877×10^-05 s^-1)
Mode of decay:
E.C.
to
90
40
Zr
(Q = 6.111 MeV)
Meta state at 0.122 Mev
Spin: 6+ 14.60
Half life: 63 µs ( 6.3×10^-05 sec., λ = 11002.3 s^-1)
Mode of decay: γ (IT) to
90
41
Nb
(Q = 0.122 MeV)
Meta state at 0.124 Mev
Spin: 4- 6360
Half life: 18.81 s ( 18.81 sec., λ = 0.0368499 s^-1)
Mode of decay: γ (IT) to
90
41
Nb
(Q = 0.125 MeV)
Meta state at 0.382 Mev
Spin: 1+ 18.81
Half life: 6.19 ms ( 0.00619 sec., λ = 111.979 s^-1)
Mode of decay: γ (IT) to
90
41
Nb
(Q = 0.382 MeV)
Possible parent nuclides:
E.C. from
90
42
Mo

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	14.6 h	8+	4.961(4)		[93Nb]	NMR/ON	NP A365 13 (81)
122	66 ms	6+	+3.72(2)			TDPAD	PL 58B 43 (75)
1881	477 ns	11-	+8.78(3)			TDPAD	HFI 4 196 (78)

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