element

Information about Iridium-189:


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

Mass-Energy Data:

Atomic Mass:	188.958716	±	0.000014	amu
Excess Mass (Δ):	-38.455352	±	0.012952	MeV
Binding Energy:	1503.694151	±	0.012954	MeV
β^- Decay Energy:	-1.970508	±	0.013946	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: 3/2+
Half life: 13.2 days ( 1.14048×10⁺⁰⁶ sec., λ = 6.07768×10^-07 s^-1)
Mode of decay:
E.C.
to
189
76
Os
(Q = 0.532 MeV)
Meta state at 0.372 Mev
Spin: 11/2- 13.2
Half life: 13.3 ms ( 0.0133 sec., λ = 52.1163 s^-1)
Mode of decay: γ (IT) (Q = 0.372 MeV)
Meta state at 2.333 Mev
Spin: 25/2+) 13.3
Half life: 3.7 ms ( 0.0037 sec., λ = 187.337 s^-1)
Mode of decay: γ (IT) (Q = 2.333 MeV)
Possible parent nuclides:
E.C. from
189
78
Pt

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	13.1 d	3/2+	"0.13(+8,-4)"		[188Ir]	NO/S	JP G6 775 (80)
				+0.878(10)		NMR/ON	PRL 77 5016 (96)
				+0.79(6)	[Ir188]	NO/S	NIMPR A316 158 (92)
				+1.0(2)	[192Ir]	NO/S	HFI 22 19 (85)/Th Schneider (80)

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