Gold-183m1

Properties and data of the isotope ¹⁸³Au.

Content

General data

Name of the isotope:Gold-183m1; Au-183m1Symbol:¹⁸³Au or 18379AuMass number A:183 (= number of nucleons)Atomic number Z:79 (= number of protons)Neutrons N:104Isotopic mass:182.967588(10) u (atomic weight of Gold-183m1)
Excitation energy: 73.3(4) keVNuclide mass:182.9242549 u (calculated nuclear mass without electrons)Mass excess:-30.19158 MeVMass defect:1.551740792 u (per nucleus)Nuclear binding energy:1445.4372373 MeV (per nucleus)
7.89856414 MeV (average binding energy per nucleon)Half-life:1 μsDecay constant λ:693147.18055995 s^-1Specific activity α:2.29353294395 × 10⁺²⁷ Bq g^-1
6.198737686367 × 10⁺¹⁶ Ci g^-1Spin and parity:
(nuclear angular momentum)(1/2)+

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
¹⁸³Au		42.8(10) s	(5/2)-
^183m2Au	230.6(6) keV	1 μs	(11/2)-

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 104) and isobaric (same nucleon number A = 183) with Gold-183m1. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 104	Isobar A = 183
62	¹⁶⁶Sm
63	¹⁶⁷Eu
64	¹⁶⁸Gd
65	¹⁶⁹Tb
66	¹⁷⁰Dy
67	¹⁷¹Ho
68	¹⁷²Er
69	¹⁷³Tm
70	¹⁷⁴Yb	¹⁸³Yb
71	¹⁷⁵Lu	¹⁸³Lu
72	¹⁷⁶Hf	¹⁸³Hf
73	¹⁷⁷Ta	¹⁸³Ta
74	¹⁷⁸W	¹⁸³W
75	¹⁷⁹Re	¹⁸³Re
76	¹⁸⁰Os	¹⁸³Os
77	¹⁸¹Ir	¹⁸³Ir
78	¹⁸²Pt	¹⁸³Pt
79	¹⁸³Au	¹⁸³Au
80	¹⁸⁴Hg	¹⁸³Hg
81	¹⁸⁵Tl	¹⁸³Tl
82	¹⁸⁶Pb	¹⁸³Pb
83	¹⁸⁷Bi
84	¹⁸⁸Po