Copper-70m2

Properties and data of the isotope ^70m2Cu.

Contents

General data

Name of the isotope:Copper-70m2; Cu-70m2Symbol:^70m2Cu or 70m229CuMass number A:70 (= number of nucleons)Atomic number Z:29 (= number of protons)Neutrons N:41Isotopic mass:69.9323921(12) u (atomic weight of Copper-70m2)
Excitation energy: 242.6(5) keVNuclide mass:69.9164837 u (calculated nuclear mass without electrons)Mass excess:-62.97635 MeVMass defect:0.649795384 u (per nucleus)Nuclear binding energy:605.28050142 MeV (per nucleus)
8.64686431 MeV (average binding energy per nucleon)Half-life:6.6(2) sDecay constant λ:0.10502230008484 s^-1Specific activity α:9.166073689064 × 10⁺²⁰ Bq g^-1
24773172132.607 Ci g^-1Spin and parity:
(nuclear angular momentum)1+Magnetic dipole moment:μ(μ_N) = +1.7779(15)Quadrupole moment Q:-0.12(3) barn (100 fm²)Nuclear g-factor:g_l = 1.7779

Radioactive Decay

Half-life T_½ = 6.6(2) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁷⁰Zn	93.2(9) %
Iso	⁷⁰Cu	6.8(9) %

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
⁷⁰Cu		44.5(2) s	6-
^70m1Cu	101.1(3) keV	33(2) s	3-

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 41) and isobaric (same nucleon number A = 70) with Copper-70m2. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 41	Isobar A = 70
22	⁶³Ti
23	⁶⁴V
24	⁶⁵Cr
25	⁶⁶Mn	⁷⁰Mn
26	⁶⁷Fe	⁷⁰Fe
27	⁶⁸Co	⁷⁰Co
28	⁶⁹Ni	⁷⁰Ni
29	⁷⁰Cu	⁷⁰Cu
30	⁷¹Zn	⁷⁰Zn
31	⁷²Ga	⁷⁰Ga
32	⁷³Ge	⁷⁰Ge
33	⁷⁴As	⁷⁰As
34	⁷⁵Se	⁷⁰Se
35	⁷⁶Br	⁷⁰Br
36	⁷⁷Kr	⁷⁰Kr
37	⁷⁸Rb
38	⁷⁹Sr
39	⁸⁰Y
40	⁸¹Zr
41	⁸²Nb
42	⁸³Mo
44	⁸⁵Ru