Copper-75m2

Properties and data of the isotope ^75m2Cu.

Contents

General data

Name of the isotope:Copper-75m2; Cu-75m2Symbol:^75m2Cu or 75m229CuMass number A:75 (= number of nucleons)Atomic number Z:29 (= number of protons)Neutrons N:46Isotopic mass:74.9415226(25) u (atomic weight of Copper-75m2)
Excitation energy: 66.2(4) keVNuclide mass:74.9256142 u (calculated nuclear mass without electrons)Mass excess:-54.47135 MeVMass defect:0.68398946400001 u (per nucleus)Nuclear binding energy:637.13208178 MeV (per nucleus)
8.49509442 MeV (average binding energy per nucleon)Half-life:149(6) nsDecay constant λ:4651994.5004023 s^-1Specific activity α:3.785806237982 × 10⁺²⁸ Bq g^-1
1.023190875130 × 10⁺¹⁸ Ci g^-1Spin and parity:
(nuclear angular momentum)(1/2-.3/2-)

Radioactive Decay

Half-life T_½ = 149(6) ns respectively 1.49 × 10^-7 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
Iso	⁷⁵Cu	100 %

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
⁷⁵Cu		1.224(3) s	5/2(-)
^75m1Cu	61.7(4) keV	310(8) ns	(1/2-,3/2-)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 46) and isobaric (same nucleon number A = 75) with Copper-75m2. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 46	Isobar A = 75
25	⁷¹Mn
26	⁷²Fe
27	⁷³Co	⁷⁵Co
28	⁷⁴Ni	⁷⁵Ni
29	⁷⁵Cu	⁷⁵Cu
30	⁷⁶Zn	⁷⁵Zn
31	⁷⁷Ga	⁷⁵Ga
32	⁷⁸Ge	⁷⁵Ge
33	⁷⁹As	⁷⁵As
34	⁸⁰Se	⁷⁵Se
35	⁸¹Br	⁷⁵Br
36	⁸²Kr	⁷⁵Kr
37	⁸³Rb	⁷⁵Rb
38	⁸⁴Sr	⁷⁵Sr
39	⁸⁵Y
40	⁸⁶Zr
41	⁸⁷Nb
42	⁸⁸Mo
43	⁸⁹Tc
44	⁹⁰Ru
45	⁹¹Rh
46	⁹²Pd
47	⁹³Ag
48	⁹⁴Cd