Manganese-59

Properties and data of the isotope ⁵⁹Mn.

Content

General data

Name of the isotope:Manganese-59; Mn-59Symbol:⁵⁹Mn or 5925MnMass number A:59 (= number of nucleons)Atomic number Z:25 (= number of protons)Neutrons N:34Isotopic mass:58.9403911(25) u (atomic weight of Manganese-59)Nuclide mass:58.9266769 u (calculated nuclear mass without electrons)Mass excess:-55.52533 MeVMass defect:0.549841844 u (per nucleus)Nuclear binding energy:512.17437863 MeV (per nucleus)
8.68092167 MeV (average binding energy per nucleon)Separation energy:S_N = 7.769(4) MeV (first neutron)
S_P = 10.8225(28) MeV (first proton)Half-life:4.59(5) sDecay constant λ:0.15101245763833 s^-1Specific activity α:1.567962571557 × 10⁺²¹ Bq g^-1
42377366798.849 Ci g^-1Spin and parity:
(nuclear angular momentum)5/2-Magnetic dipole moment:μ(μ_N) = +3.494(3)Quadrupole moment Q:+0.34(4) barn (100 fm²)Nuclear g-factor:g_l = 1.3976Year of discovery:1976

Radioactive Decay

Half-life T_½ = 4.59(5) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁵⁹Fe		5.1395(24) MeV

Parent Nuclides

Direct parent isotope is: ⁵⁹Cr.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 34) and isobaric (same nucleon number A = 59) with Manganese-59. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 34	Isobar A = 59
17	⁵¹Cl
18	⁵²Ar
19	⁵³K
20	⁵⁴Ca
21	⁵⁵Sc	⁵⁹Sc
22	⁵⁶Ti	⁵⁹Ti
23	⁵⁷V	⁵⁹V
24	⁵⁸Cr	⁵⁹Cr
25	⁵⁹Mn	⁵⁹Mn
26	⁶⁰Fe	⁵⁹Fe
27	⁶¹Co	⁵⁹Co
28	⁶²Ni	⁵⁹Ni
29	⁶³Cu	⁵⁹Cu
30	⁶⁴Zn	⁵⁹Zn
31	⁶⁵Ga	⁵⁹Ga
32	⁶⁶Ge	⁵⁹Ge
33	⁶⁷As
34	⁶⁸Se
35	⁶⁹Br
36	⁷⁰Kr
37	⁷¹Rb