Information about Gadolinium-156:


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

Mass-Energy Data:

Atomic Mass:	155.922120	±	0.000003	amu
Excess Mass (Δ):	-72.545159	±	0.002950	MeV
Binding Energy:	1281.600899	±	0.002957	MeV
β^- Decay Energy:	-2.444423	±	0.003675	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: 20.47%
Spin: 0+
Stable Isotope
Possible parent nuclides:
β^- from
156
63
Eu

E.C. from
156
65
Tb

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
89	2.21 ns	2+	+0.82(14)		[158Gd 261]	TF	ZP A338 135 (91)
			+0.774(8)		[155Gd]	ME	NP A233 385 (74)
				-1.93(4) a		Mu-X	PR C27 1772 (83)
				-1.96(4)	[155Gd]	ME	NP A233 385 (74)
288	112 ps	4+	+1.68(12)		[156Gd 89]	TF	PR C45 1549 (92)
			+1.76(16)		[156Gd 89]	TF	HFI 59 125 (90)
			+1.31(8)		[BhfGd(Fe)]	IPAC	ZP A335 387 (90)
			+1.63(15)		[158Gd 261]	TF	ZP A338 135 (91)
			+1.55(14)		[156Gd 89]	TF	ZP A338 135 (91)
			+1.24(8)			IPAC	ZP A331 277 (88)
585	16 ps	6+	+2.4(2)		[156Gd 89]	TF	PR C45 1549 (92)
			+2.3(4)		[158Gd 261]	TF	ZP A338 135 (91)
			+2.2(4)		[156Gd 89]	TF	ZP A338 135 (91)
			+1.5(13)			IPAC	ZP A331 277 (88)
965	4.3 ps	8+	+2.7(3)		[156Gd 89]	TF	PR C45 1549 (92)
1511	190 ps	4+	+3.24(11)			IPAC	ZP A331 277 (88)
gsb		<10+	g(10+)/g(2+) =0.89(12)			TF	NP A406 339 (83)
			ax10*3=-1.1(12)

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