Gold-193m1

Properties and data of the isotope ¹⁹³Au.

Content

General data

Name of the isotope:Gold-193m1; Au-193m1Symbol:¹⁹³Au or 19379AuMass number A:193 (= number of nucleons)Atomic number Z:79 (= number of protons)Neutrons N:114Isotopic mass:192.964138(9) u (atomic weight of Gold-193m1)
Excitation energy: 290.20(4) keVNuclide mass:192.9208049 u (calculated nuclear mass without electrons)Mass excess:-33.40524 MeVMass defect:1.641839952 u (per nucleus)Nuclear binding energy:1529.36406425 MeV (per nucleus)
7.92416614 MeV (average binding energy per nucleon)Half-life:3.9(3) sDecay constant λ:0.17773004629742 s^-1Specific activity α:5.574559238782 × 10⁺²⁰ Bq g^-1
15066376321.033 Ci g^-1Spin and parity:
(nuclear angular momentum)11/2-Magnetic dipole moment:μ(μ_N) = 6.18(9)Quadrupole moment Q:+ 1.98(6) barn (100 fm²)Nuclear g-factor:g_l = 1.1236363636364

Radioactive Decay

Half-life T_½ = 3.9(3) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	¹⁹³Pt	0.03 %
Iso	¹⁹³Au	99.97 %

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
¹⁹³Au		17.65(15) h	3/2+
^193m2Au	2486.7(6) keV	150(50) ns	(31/2+)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 114) and isobaric (same nucleon number A = 193) with Gold-193m1. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 114	Isobar A = 193
70	¹⁸⁴Yb
71	¹⁸⁵Lu
72	¹⁸⁶Hf
73	¹⁸⁷Ta	¹⁹³Ta
74	¹⁸⁸W	¹⁹³W
75	¹⁸⁹Re	¹⁹³Re
76	¹⁹⁰Os	¹⁹³Os
77	¹⁹¹Ir	¹⁹³Ir
78	¹⁹²Pt	¹⁹³Pt
79	¹⁹³Au	¹⁹³Au
80	¹⁹⁴Hg	¹⁹³Hg
81	¹⁹⁵Tl	¹⁹³Tl
82	¹⁹⁶Pb	¹⁹³Pb
83	¹⁹⁷Bi	¹⁹³Bi
84	¹⁹⁸Po	¹⁹³Po
85	¹⁹⁹At	¹⁹³At
86	²⁰⁰Rn	¹⁹³Rn
87	²⁰¹Fr
88	²⁰²Ra