Zinc-73m1

Properties and data of the isotope ⁷³Zn.

Content

General data

Name of the isotope:Zinc-73m1; Zn-73m1Symbol:⁷³Zn or 7330ZnMass number A:73 (= number of nucleons)Atomic number Z:30 (= number of protons)Neutrons N:43Isotopic mass:72.9295826(20) u (atomic weight of Zinc-73m1)
Excitation energy: 195.5(2) keVNuclide mass:72.9131257 u (calculated nuclear mass without electrons)Mass excess:-65.59339 MeVMass defect:0.677759748 u (per nucleus)Nuclear binding energy:631.3291387 MeV (per nucleus)
8.64834437 MeV (average binding energy per nucleon)Half-life:13.0(2) msDecay constant λ:53.319013889227 s^-1Specific activity α:4.459647391025 × 10⁺²³ Bq g^-1
12053101056826 Ci g^-1Spin and parity:
(nuclear angular momentum)5/2+Magnetic dipole moment:μ(μ_N) = -0.8527(14)Quadrupole moment Q:+0.43(4) barn (100 fm²)Nuclear g-factor:g_l = -0.34108

Radioactive Decay

Half-life T_½ = 13.0(2) ms respectively 1.30 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
Iso	⁷³Zn

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
⁷³Zn		24.5(2) s	1/2-
^73m2Zn	237.6(20) keV	5.8(8) s	(7/2+)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 43) and isobaric (same nucleon number A = 73) with Zinc-73m1. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 43	Isobar A = 73
23	⁶⁶V
24	⁶⁷Cr
25	⁶⁸Mn
26	⁶⁹Fe	⁷³Fe
27	⁷⁰Co	⁷³Co
28	⁷¹Ni	⁷³Ni
29	⁷²Cu	⁷³Cu
30	⁷³Zn	⁷³Zn
31	⁷⁴Ga	⁷³Ga
32	⁷⁵Ge	⁷³Ge
33	⁷⁶As	⁷³As
34	⁷⁷Se	⁷³Se
35	⁷⁸Br	⁷³Br
36	⁷⁹Kr	⁷³Kr
37	⁸⁰Rb	⁷³Rb
38	⁸¹Sr	⁷³Sr
39	⁸²Y
40	⁸³Zr
41	⁸⁴Nb
42	⁸⁵Mo
43	⁸⁶Tc
44	⁸⁷Ru