Lead-183m

Properties and data of the isotope ^183mPb.

Contents

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

General data

Name of the isotope:Lead-183m; Pb-183mSymbol:^183mPb or 183m82PbMass number A:183 (= number of nucleons)Atomic number Z:82 (= number of protons)Neutrons N:101Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.2317073170732 (= neutron-proton ratio)Neutron excess (N-Z):19Isotopic mass:182.99187(3) u (atomic weight of Lead-183m)Nuclide mass:182.9468916 u (calculated nuclear mass without electrons)Mass excess:-7.57305 MeVMass defect:1.52493914 u (per nucleus)Nuclear binding energy:1420.47165928 MeV (per nucleus)
7.76214021 MeV (average binding energy per nucleon)Half-life:415(20) msDecay constant λ:1.670234170024 s^-1Specific activity α:5.52658540712 × 10⁺²¹ Bq g^-1
149367173165.49 Ci g^-1Spin and parity:
(nuclear angular momentum)(13/2+)Magnetic dipole moment:μ(μ_N) = -1.245(6)Quadrupole moment Q:+1.70 barn (100 fm²)Nuclear g-factor:g_l = -0.19153846153846

Radioactive Decay

Half-life T_½ = 415(20) ms respectively 4.15 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	¹⁷⁹Hg	ca. 100 %
Iso	¹⁸³Pb	?

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
¹⁸³Pb		535(30) ms	(3/2-)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 101) and isobaric (same nucleon number A = 183) with Lead-183m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 101	Isobar A = 183
58	¹⁵⁹Ce
59	¹⁶⁰Pr
60	¹⁶¹Nd
61	¹⁶²Pm
62	¹⁶³Sm
63	¹⁶⁴Eu
64	¹⁶⁵Gd
65	¹⁶⁶Tb
66	¹⁶⁷Dy
67	¹⁶⁸Ho
68	¹⁶⁹Er
69	¹⁷⁰Tm
70	¹⁷¹Yb	¹⁸³Yb
71	¹⁷²Lu	¹⁸³Lu
72	¹⁷³Hf	¹⁸³Hf
73	¹⁷⁴Ta	¹⁸³Ta
74	¹⁷⁵W	¹⁸³W
75	¹⁷⁶Re	¹⁸³Re
76	¹⁷⁷Os	¹⁸³Os
77	¹⁷⁸Ir	¹⁸³Ir
78	¹⁷⁹Pt	¹⁸³Pt
79	¹⁸⁰Au	¹⁸³Au
80	¹⁸¹Hg	¹⁸³Hg
81	¹⁸²Tl	¹⁸³Tl
82	¹⁸³Pb	¹⁸³Pb
83	¹⁸⁴Bi