Lutetium-164

Properties and data of the isotope ¹⁶⁴Lu.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

See also: List of individual Lutetium isotopes (and general data sources).

General data

Name of the isotope:Lutetium-164; Lu-164Symbol:¹⁶⁴Lu or 16471LuMass number A:164 (= number of nucleons)Atomic number Z:71 (= number of protons)Neutrons N:93Isotopic mass:163.94134(3) u (atomic weight of Lutetium-164)Nuclide mass:163.9023945 u (calculated nuclear mass without electrons)Mass excess:-54.64144 MeVMass defect:1.42007446 u (per nucleus)Nuclear binding energy:1322.79083904 MeV (per nucleus)
8.0657978 MeV (average binding energy per nucleon)Separation energy:S_N = 7.92(4) MeV (first neutron)
S_P = 2.63(3) MeV (first proton)Half-life:3.14(3) minDecay constant λ:0.0036791251622078 s^-1Specific activity α:1.359276685162 × 10⁺¹⁹ Bq g^-1
367372077.07103 Ci g^-1Spin and parity:
(nuclear angular momentum)1(-)Magnetic dipole moment:μ(μ_N) = + 0.0591(11)Quadrupole moment Q:+ 0.608(7) barn (100 fm²)Nuclear g-factor:g_l = 0.0591Charge radius:5.2677(310) femtometer fmYear of discovery:1977

Radioactive Decay

Half-life T_½ = 3.14(3) min (minutes) respectively 1.884 × 10² seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC/β⁺	¹⁶⁴Yb	100 %	6.38(3) MeV

Parent Nuclides

Direct parent isotope is: ¹⁶⁴Hf.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 93) and isobaric (same nucleon number A = 164) with Lutetium-164. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 93	Isobar A = 164
54	¹⁴⁷Xe
55	¹⁴⁸Cs
56	¹⁴⁹Ba
57	¹⁵⁰La
58	¹⁵¹Ce
59	¹⁵²Pr
60	¹⁵³Nd
61	¹⁵⁴Pm
62	¹⁵⁵Sm	¹⁶⁴Sm
63	¹⁵⁶Eu	¹⁶⁴Eu
64	¹⁵⁷Gd	¹⁶⁴Gd
65	¹⁵⁸Tb	¹⁶⁴Tb
66	¹⁵⁹Dy	¹⁶⁴Dy
67	¹⁶⁰Ho	¹⁶⁴Ho
68	¹⁶¹Er	¹⁶⁴Er
69	¹⁶²Tm	¹⁶⁴Tm
70	¹⁶³Yb	¹⁶⁴Yb
71	¹⁶⁴Lu	¹⁶⁴Lu
72	¹⁶⁵Hf	¹⁶⁴Hf
73	¹⁶⁶Ta	¹⁶⁴Ta
74	¹⁶⁷W	¹⁶⁴W
75	¹⁶⁸Re	¹⁶⁴Re
76	¹⁶⁹Os	¹⁶⁴Os
77	¹⁷⁰Ir	¹⁶⁴Ir
78	¹⁷¹Pt
79	¹⁷²Au
80	¹⁷³Hg