Information about Erbium-166:


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Mass-Energy Data:

Atomic Mass:	165.930290	±	0.000003	amu
Excess Mass (Δ):	-64.934464	±	0.002921	MeV
Binding Energy:	1351.574019	±	0.002930	MeV
β^- Decay Energy:	-3.039615	±	0.011094	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: 33.6%
Spin: 0+
Stable Isotope
Possible parent nuclides:
β^- from
166
67
Ho

E.C. from
166
69
Tm

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
81	1.85 ns	2+	+0.649(10)		[167Er]	ME	HFI 11 29 (81)
			+0.632(10)		[167Er]	ME	ZP 208 184 (68)/PL 10 319 (64)
				-2.7(9)		CER	ORNL 4513 56 (70)
				-2.9(10)		CER	Cf69Heid 471 (69)
				-1.9(4) st		ME	ZP 182 499 (65)
265	118 ps	4+	+1.14(8)			TF	NP A600 272 (96)
			+1.26(6)		[166Er 81]	IPAC	ZP A322 467 (85)
				-2.7(9)		CER	BAPS 14 1204 (69)
545	16.8 ps	6+	+1.72(9)			TF	NP A600 272 (96)
			+1.6(2)		[166Er 265]	TF	ZP A325 285 (86)
			+1.55(7)		[166Er 81]	IPAC	ZP A322 467 (85)
786	4.6 ps	2+	+0.74(5)			TF	NP A600 272 (96)
			+0.56(9)		[166Er 265]	TF	ZP A325 285 (86)
				2.2(2)		CER	PR C27 550 (83)
				2.1(4)		CER	NP A289 253 (77)
				2.0(3)		CER	ORNL 4513 56 (70)
911	4.2 ps	8+	+2.2(2)			TF	NP A600 272 (96)
			+1.9(3)		[166Er 265]	TF	ZP A325 285 (86)
			+2.1(4)		[166Er 81]	IPAC	ZP A322 467 (85)
1216	3.9 ps	6+	+1.5(2)		[166Er 81]	IPAC	ZP A322 467 (85)
1350	1.7 ps	10+	+2.8(4)			TF	NP A600 272 (96)
			+2.0(8)		[166Er 265]	TF	ZP A325 285 (86)

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