Yttrium-83m

Properties and data of the isotope ⁸³Y.

Content

General data

Name of the isotope:Yttrium-83m; Y-83mSymbol:⁸³Y or 8339YMass number A:83 (= number of nucleons)Atomic number Z:39 (= number of protons)Neutrons N:44Isotopic mass:82.922484(20) u (atomic weight of Yttrium-83m)
Excitation energy: 62.04(10) keVNuclide mass:82.9010903 u (calculated nuclear mass without electrons)Mass excess:-72.20569 MeVMass defect:0.763948552 u (per nucleus)Nuclear binding energy:711.6134925 MeV (per nucleus)
8.57365654 MeV (average binding energy per nucleon)Half-life:2.85(2) minDecay constant λ:0.0040534922839763 s^-1Specific activity α:2.976914818142 × 10⁺¹⁹ Bq g^-1
804571572.47105 Ci g^-1Spin and parity:
(nuclear angular momentum)3/2-

Radioactive Decay

Half-life T_½ = 2.85(2) min (minutes) respectively 1.71 × 10² seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	⁸³Sr	60(5) %	4.6 MeV
Iso	⁸³Y	40(5) %	?

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
⁸³Y		7.08(8) min	9/2+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 44) and isobaric (same nucleon number A = 83) with Yttrium-83m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 44	Isobar A = 83
23	⁶⁷V
24	⁶⁸Cr
25	⁶⁹Mn
26	⁷⁰Fe
27	⁷¹Co
28	⁷²Ni
29	⁷³Cu
30	⁷⁴Zn	⁸³Zn
31	⁷⁵Ga	⁸³Ga
32	⁷⁶Ge	⁸³Ge
33	⁷⁷As	⁸³As
34	⁷⁸Se	⁸³Se
35	⁷⁹Br	⁸³Br
36	⁸⁰Kr	⁸³Kr
37	⁸¹Rb	⁸³Rb
38	⁸²Sr	⁸³Sr
39	⁸³Y	⁸³Y
40	⁸⁴Zr	⁸³Zr
41	⁸⁵Nb	⁸³Nb
42	⁸⁶Mo	⁸³Mo
43	⁸⁷Tc
44	⁸⁸Ru
45	⁸⁹Rh
46	⁹⁰Pd