Lutetium-162m1

Properties and data of the isotope ¹⁶²Lu.

Content

General data

Name of the isotope:Lutetium-162m1; Lu-162m1Symbol:¹⁶²Lu or 16271LuMass number A:162 (= number of nucleons)Atomic number Z:71 (= number of protons)Neutrons N:91Isotopic mass:161.94328(8) u (atomic weight of Lutetium-162m1)
Excitation energy: XNuclide mass:161.9043345 u (calculated nuclear mass without electrons)Mass excess:-52.83434 MeVMass defect:1.400804628 u (per nucleus)Nuclear binding energy:1304.84110615 MeV (per nucleus)
8.05457473 MeV (average binding energy per nucleon)Half-life:1.5 minDecay constant λ:0.00077016353395549 s^-1Specific activity α:2.880766016563 × 10⁺¹⁸ Bq g^-1
77858540.988192 Ci g^-1Spin and parity:
(nuclear angular momentum)(4-)

Radioactive Decay

Half-life T_½ = 1.5 min (minutes) respectively 9.0 × 10² seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	¹⁶²Yb	≤ 100 %

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear Isomer	Excitation Energy	Half-life	Spin
¹⁶²Lu		1.37(2) min	1-
^162m2Lu	Y	1.9 min

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 91) and isobaric (same nucleon number A = 162) with Lutetium-162m1. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 91	Isobar A = 162
52	¹⁴³Te
53	¹⁴⁴I
54	¹⁴⁵Xe
55	¹⁴⁶Cs
56	¹⁴⁷Ba
57	¹⁴⁸La
58	¹⁴⁹Ce
59	¹⁵⁰Pr
60	¹⁵¹Nd	¹⁶²Nd
61	¹⁵²Pm	¹⁶²Pm
62	¹⁵³Sm	¹⁶²Sm
63	¹⁵⁴Eu	¹⁶²Eu
64	¹⁵⁵Gd	¹⁶²Gd
65	¹⁵⁶Tb	¹⁶²Tb
66	¹⁵⁷Dy	¹⁶²Dy
67	¹⁵⁸Ho	¹⁶²Ho
68	¹⁵⁹Er	¹⁶²Er
69	¹⁶⁰Tm	¹⁶²Tm
70	¹⁶¹Yb	¹⁶²Yb
71	¹⁶²Lu	¹⁶²Lu
72	¹⁶³Hf	¹⁶²Hf
73	¹⁶⁴Ta	¹⁶²Ta
74	¹⁶⁵W	¹⁶²W
75	¹⁶⁶Re	¹⁶²Re
76	¹⁶⁷Os	¹⁶²Os
77	¹⁶⁸Ir
78	¹⁶⁹Pt
79	¹⁷⁰Au
80	¹⁷¹Hg