Manganese-62m

Properties and data of the isotope ⁶²Mn.

Content

General data

Name of the isotope:Manganese-62m; Mn-62mSymbol:⁶²Mn or 6225MnMass number A:62 (= number of nucleons)Atomic number Z:25 (= number of protons)Neutrons N:37Isotopic mass:61.947907(7) u (atomic weight of Manganese-62m)
Excitation energy: + YNuclide mass:61.9341928 u (calculated nuclear mass without electrons)Mass excess:-48.52432 MeVMass defect:0.568320692 u (per nucleus)Nuclear binding energy:529.38731467 MeV (per nucleus)
8.53850508 MeV (average binding energy per nucleon)Half-life:671(5) msDecay constant λ:1.0330062303427 s^-1Specific activity α:1.019821152182 × 10⁺²² Bq g^-1
275627338427.81 Ci g^-1Spin and parity:
(nuclear angular momentum)(4+)Magnetic dipole moment:μ(μ_N) = +3.170(3)Nuclear g-factor:g_l = 0.7925

Radioactive Decay

Half-life T_½ = 671(5) ms respectively 6.71 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁶²Fe	100 %
β^-, n	⁶¹Fe	?

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
⁶²Mn		92(13) ms	(1+)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 37) and isobaric (same nucleon number A = 62) with Manganese-62m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

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