Copper-69m

Properties and data of the isotope ^69mCu.

Contents

General data

Name of the isotope:Copper-69m; Cu-69mSymbol:^69mCu or 69m29CuMass number A:69 (= number of nucleons)Atomic number Z:29 (= number of protons)Neutrons N:40Isotopic mass:68.9294293(15) u (atomic weight of Copper-69m)
Excitation energy: 27420(7) keVNuclide mass:68.9135209 u (calculated nuclear mass without electrons)Mass excess:-65.73618 MeVMass defect:0.64409326800001 u (per nucleus)Nuclear binding energy:599.96901458 MeV (per nucleus)
8.69520311 MeV (average binding energy per nucleon)Half-life:357(2) nsDecay constant λ:1941588.7410643 s^-1Specific activity α:1.719488366287 × 10⁺²⁸ Bq g^-1
4.647265854831 × 10⁺¹⁷ Ci g^-1Spin and parity:
(nuclear angular momentum)(13/2+)Magnetic dipole moment:μ(μ_N) = 1.46(16)Nuclear g-factor:g_l = 0.22461538461538

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
⁶⁹Cu		2.85(15) min	3/2-

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 40) and isobaric (same nucleon number A = 69) with Copper-69m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 40	Isobar A = 69
21	⁶¹Sc
22	⁶²Ti
23	⁶³V
24	⁶⁴Cr
25	⁶⁵Mn	⁶⁹Mn
26	⁶⁶Fe	⁶⁹Fe
27	⁶⁷Co	⁶⁹Co
28	⁶⁸Ni	⁶⁹Ni
29	⁶⁹Cu	⁶⁹Cu
30	⁷⁰Zn	⁶⁹Zn
31	⁷¹Ga	⁶⁹Ga
32	⁷²Ge	⁶⁹Ge
33	⁷³As	⁶⁹As
34	⁷⁴Se	⁶⁹Se
35	⁷⁵Br	⁶⁹Br
36	⁷⁶Kr	⁶⁹Kr
37	⁷⁷Rb
38	⁷⁸Sr
39	⁷⁹Y
40	⁸⁰Zr
41	⁸¹Nb
42	⁸²Mo