Niobium-93m

Properties and data of the isotope ^93mNb.

Contents

General data

Name of the isotope:Niobium-93m; Nb-93mSymbol:^93mNb or 93m41NbMass number A:93 (= number of nucleons)Atomic number Z:41 (= number of protons)Neutrons N:52Isotopic mass:92.90637(2) u (atomic weight of Niobium-93m)
Excitation energy: 30.77(2) keVNuclide mass:92.8838792 u (calculated nuclear mass without electrons)Mass excess:-87.21578 MeVMass defect:0.86503194400001 u (per nucleus)Nuclear binding energy:805.77206564 MeV (per nucleus)
8.66421576 MeV (average binding energy per nucleon)Half-life:16.12(12) aDecay constant λ:1.363496696356 × 10^-9 s^-1Specific activity α:8925183877738.1 Bq g^-1
241.22118588481 Ci g^-1Spin and parity:
(nuclear angular momentum)1/2-

Radioactive Decay

Half-life T_½ = 16.12(12) a respectively 5.0836 × 10⁸ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
Iso	⁹³Nb	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
⁹³Nb		stable	9/2+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 52) and isobaric (same nucleon number A = 93) with Niobium-93m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 52	Isobar A = 93
28	⁸⁰Ni
29	⁸¹Cu
30	⁸²Zn
31	⁸³Ga
32	⁸⁴Ge
33	⁸⁵As
34	⁸⁶Se	⁹³Se
35	⁸⁷Br	⁹³Br
36	⁸⁸Kr	⁹³Kr
37	⁸⁹Rb	⁹³Rb
38	⁹⁰Sr	⁹³Sr
39	⁹¹Y	⁹³Y
40	⁹²Zr	⁹³Zr
41	⁹³Nb	⁹³Nb
42	⁹⁴Mo	⁹³Mo
43	⁹⁵Tc	⁹³Tc
44	⁹⁶Ru	⁹³Ru
45	⁹⁷Rh	⁹³Rh
46	⁹⁸Pd	⁹³Pd
47	⁹⁹Ag	⁹³Ag
48	¹⁰⁰Cd
49	¹⁰¹In
50	¹⁰²Sn
51	¹⁰³Sb