Strontium-83

Properties and data of the isotope ⁸³Sr.

Contents

General data

Name of the isotope:Strontium-83; Sr-83Symbol:⁸³Sr or 8338SrMass number A:83 (= number of nucleons)Atomic number Z:38 (= number of protons)Neutrons N:45Isotopic mass:82.917554(7) u (atomic weight of Strontium-83)Nuclide mass:82.8967088 u (calculated nuclear mass without electrons)Mass excess:-76.79795 MeVMass defect:0.76971843600001 u (per nucleus)Nuclear binding energy:716.98810482 MeV (per nucleus)
8.6384109 MeV (average binding energy per nucleon)Separation energy:S_N = 8.859(9) MeV (first neutron)
S_P = 7.899(7) MeV (first proton)Half-life:32.41(3) hDecay constant λ:5.940786284753 × 10^-6 s^-1Specific activity α:4.362957539703 × 10⁺¹⁶ Bq g^-1
1179177.7134334 Ci g^-1Spin and parity:
(nuclear angular momentum)7/2+Magnetic dipole moment:μ(μ_N) = -0.8295(7)Quadrupole moment Q:+0.781(67) barn (100 fm²)Nuclear g-factor:g_l = -0.237Charge radius:4.2455(27) femtometer fmYear of discovery:1952

Radioactive Decay

Half-life T_½ = 32.41(3) h (hours) respectively 1.16676 × 10⁵ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC/β⁺	⁸³Rb	100 %	2.273(7) MeV

Parent Nuclides

Direct parent isotope is: ⁸³Y.

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
^83mSr	259.15(9) keV	4.95(12) s	1/2-

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 45) and isobaric (same nucleon number A = 83) with Strontium-83. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 45	Isobar A = 83
25	⁷⁰Mn
26	⁷¹Fe
27	⁷²Co
28	⁷³Ni
29	⁷⁴Cu
30	⁷⁵Zn	⁸³Zn
31	⁷⁶Ga	⁸³Ga
32	⁷⁷Ge	⁸³Ge
33	⁷⁸As	⁸³As
34	⁷⁹Se	⁸³Se
35	⁸⁰Br	⁸³Br
36	⁸¹Kr	⁸³Kr
37	⁸²Rb	⁸³Rb
38	⁸³Sr	⁸³Sr
39	⁸⁴Y	⁸³Y
40	⁸⁵Zr	⁸³Zr
41	⁸⁶Nb	⁸³Nb
42	⁸⁷Mo	⁸³Mo
43	⁸⁸Tc
44	⁸⁹Ru
45	⁹⁰Rh
46	⁹¹Pd
47	⁹²Ag