Nickel-65m

Properties and data of the isotope ^65mNi.

Contents

See also: List of individual Nickel isotopes (and general data sources).

General data

Name of the isotope:Nickel-65m; Ni-65mSymbol:^65mNi or 65m28NiMass number A:65 (= number of nucleons)Atomic number Z:28 (= number of protons)Neutrons N:37Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.3214285714286 (= neutron-proton ratio)Neutron excess (N-Z):9Excitation energy:63.37(5) keVIsotopic mass:64.9300847(5) u (atomic weight of Nickel-65m)Nuclide mass:64.9147249 u (calculated nuclear mass without electrons)Mass excess:-65.12568 MeVMass defect:0.609618088 u (per nucleus)Nuclear binding energy:567.85559126 MeV (per nucleus)
8.73623987 MeV (average binding energy per nucleon)Half-life:69(3) μsDecay constant λ:10045.611312463 s^-1Specific activity α:9.31711172462 × 10⁺²⁵ Bq g^-1
2.518138303951 × 10⁺¹⁵ Ci g^-1Spin and parity:
(nuclear angular momentum)1/2-

Radioactive Decay

Half-life T_½ = 69(3) μs respectively 6.9 × 10^-5 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁶⁵Cu

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
⁶⁵Ni		2.5175(5) h	5/2-

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 37) and isobaric (same nucleon number A = 65) with Nickel-65m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 37	Isobar A = 65
19	⁵⁶K
20	⁵⁷Ca
21	⁵⁸Sc
22	⁵⁹Ti	⁶⁵Ti
23	⁶⁰V	⁶⁵V
24	⁶¹Cr	⁶⁵Cr
25	⁶²Mn	⁶⁵Mn
26	⁶³Fe	⁶⁵Fe
27	⁶⁴Co	⁶⁵Co
28	⁶⁵Ni	⁶⁵Ni
29	⁶⁶Cu	⁶⁵Cu
30	⁶⁷Zn	⁶⁵Zn
31	⁶⁸Ga	⁶⁵Ga
32	⁶⁹Ge	⁶⁵Ge
33	⁷⁰As	⁶⁵As
34	⁷¹Se	⁶⁵Se
35	⁷²Br
36	⁷³Kr
37	⁷⁴Rb
38	⁷⁵Sr
39	⁷⁶Y
40	⁷⁷Zr