Nickel-65

Properties and data of the isotope ⁶⁵Ni.

Content

General data

Name of the isotope:Nickel-65; Ni-65Symbol:⁶⁵Ni or 6528NiMass number A:65 (= number of nucleons)Atomic number Z:28 (= number of protons)Neutrons N:37Isotopic mass:64.9300847(5) u (atomic weight of Nickel-65)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)Separation energy:S_N = 6.09808(14) MeV (first neutron)
S_P = 12.622(20) MeV (first proton)Half-life:2.5175(5) hDecay constant λ:7.648098649011 × 10^-5 s^-1Specific activity α:7.196551152350 × 10⁺¹⁷ Bq g^-1
19450138.249595 Ci g^-1Spin and parity:
(nuclear angular momentum)5/2-Magnetic dipole moment:μ(μ_N) = 0.69(6)Nuclear g-factor:g_l = 0.276Year of discovery:1946

Radioactive Decay

Half-life T_½ = 2.5175(5) h (hours) respectively 9.063 × 10³ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁶⁵Cu	100 %	2.1380(7) MeV

Parent Nuclides

Direct parent isotope is: ⁶⁵Co.

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
^65mNi	63.37(5) keV	69(3) μs	1/2-

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-65. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 37	Isobar A = 65
19	⁵⁶K
20	⁵⁷Ca
21	⁵⁸Sc
22	⁵⁹Ti
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