Nickel-61

Properties and data of the isotope ⁶¹Ni.

Contents

General data

Name of the isotope:Nickel-61; Ni-61Symbol:⁶¹Ni or 6128NiMass number A:61 (= number of nucleons)Atomic number Z:28 (= number of protons)Neutrons N:33Isotopic mass:60.931056(3) u (atomic weight of Nickel-61)Nuclide mass:60.9156962 u (calculated nuclear mass without electrons)Mass excess:-64.22092 MeVMass defect:0.57398712400001 u (per nucleus)Nuclear binding energy:534.66556208 MeV (per nucleus)
8.76500921 MeV (average binding energy per nucleon)Separation energy:S_N = 7.82010(5) MeV (first neutron)
S_P = 9.86057(22) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)3/2-Magnetic dipole moment:μ(μ_N) = -0.74965(5)Charge radius:3.8225(19) femtometer fmYear of discovery:1934

Parent Nuclides

Direct parent isotopes are: ⁶¹Cu, ⁶¹Co.

Occurrence

Comparison of the natural Nickel isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

	Atomic Mass m_a	Quantity	Half-life	Spin
Nickel Isotopic mixture	58.6934 u	100 %
Isotope ⁵⁸Ni	57.935342(3) u	68.0769(190) %	stable	0+
Isotope ⁶⁰Ni	59.930786(3) u	26.2231(150) %	stable	0+
Isotope ⁶¹Ni	60.931056(3) u	1.1399(13) %	stable	3/2-
Isotope ⁶⁴Ni	63.927967(4) u	0.9256(19) %	stable	0+
Isotope ⁶²Ni	61.928345(4) u	3.6345(40) %	stable	0+

NMR data

Nuclear magnetic properties of the NMR active Nuclide ⁶¹Ni

Isotope:⁶¹Ni-NMRQuantity:1.1399(13) %Spin:3/2-Nuclearmagnetic moment
μ/μ_N:-0.74965(5)Gyromagnetic ratio γ:- 2.394 · 10⁷ rad T^-1 s^-1Nuclear g-factor:g_l = -0.49976666666667Quadrupole moment Q:+ 0.162(15) barn (100 fm²)Resonance frequency:v₀ = 3.8114 at 1 TRelative Sensitivity:0.00359 (H₀ = const.)
0.4476 (v₀ = const.)
[related to ¹H = 1.000]

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 33) and isobaric (same nucleon number A = 61) with Nickel-61. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 33	Isobar A = 61
16	⁴⁹S
17	⁵⁰Cl
18	⁵¹Ar
19	⁵²K
20	⁵³Ca
21	⁵⁴Sc	⁶¹Sc
22	⁵⁵Ti	⁶¹Ti
23	⁵⁶V	⁶¹V
24	⁵⁷Cr	⁶¹Cr
25	⁵⁸Mn	⁶¹Mn
26	⁵⁹Fe	⁶¹Fe
27	⁶⁰Co	⁶¹Co
28	⁶¹Ni	⁶¹Ni
29	⁶²Cu	⁶¹Cu
30	⁶³Zn	⁶¹Zn
31	⁶⁴Ga	⁶¹Ga
32	⁶⁵Ge	⁶¹Ge
33	⁶⁶As
34	⁶⁷Se
35	⁶⁸Br
36	⁶⁹Kr