Strontium-86m

Properties and data of the isotope ^86mSr.

Contents

General data

Name of the isotope:Strontium-86m; Sr-86mSymbol:^86mSr or 86m38SrMass number A:86 (= number of nucleons)Atomic number Z:38 (= number of protons)Neutrons N:48Isotopic mass:85.909261(8) u (atomic weight of Strontium-86m)
Excitation energy: 2955.68(21) keVNuclide mass:85.8884158 u (calculated nuclear mass without electrons)Mass excess:-84.52283 MeVMass defect:0.804006184 u (per nucleus)Nuclear binding energy:748.92693636 MeV (per nucleus)
8.70845275 MeV (average binding energy per nucleon)Half-life:455(7) nsDecay constant λ:1523400.396835 s^-1Specific activity α:1.079309620685 × 10⁺²⁸ Bq g^-1
2.917053028878 × 10⁺¹⁷ Ci g^-1Spin and parity:
(nuclear angular momentum)8+Magnetic dipole moment:μ(μ_N) = -1.93(2)Nuclear g-factor:g_l = -0.24125

Radioactive Decay

Half-life T_½ = 455(7) ns respectively 4.55 × 10^-7 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
Iso	⁸⁶Sr	100 %

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
⁸⁶Sr		stable	0+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 48) and isobaric (same nucleon number A = 86) with Strontium-86m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 48	Isobar A = 86
26	⁷⁴Fe
27	⁷⁵Co
28	⁷⁶Ni
29	⁷⁷Cu
30	⁷⁸Zn
31	⁷⁹Ga	⁸⁶Ga
32	⁸⁰Ge	⁸⁶Ge
33	⁸¹As	⁸⁶As
34	⁸²Se	⁸⁶Se
35	⁸³Br	⁸⁶Br
36	⁸⁴Kr	⁸⁶Kr
37	⁸⁵Rb	⁸⁶Rb
38	⁸⁶Sr	⁸⁶Sr
39	⁸⁷Y	⁸⁶Y
40	⁸⁸Zr	⁸⁶Zr
41	⁸⁹Nb	⁸⁶Nb
42	⁹⁰Mo	⁸⁶Mo
43	⁹¹Tc	⁸⁶Tc
44	⁹²Ru	⁸⁶Ru
45	⁹³Rh
46	⁹⁴Pd
47	⁹⁵Ag
48	⁹⁶Cd
49	⁹⁷In