Technetium-93m1

Properties and data of the isotope ⁹³Tc.

Content

General data

Name of the isotope:Technetium-93m1; Tc-93m1Symbol:⁹³Tc or 9343TcMass number A:93 (= number of nucleons)Atomic number Z:43 (= number of protons)Neutrons N:50Isotopic mass:92.9102451(11) u (atomic weight of Technetium-93m1)
Excitation energy: 391.84(8) keVNuclide mass:92.8866573 u (calculated nuclear mass without electrons)Mass excess:-83.60615 MeVMass defect:0.859477076 u (per nucleus)Nuclear binding energy:800.59773943 MeV (per nucleus)
8.60857784 MeV (average binding energy per nucleon)Half-life:43.5(10) minDecay constant λ:0.00026557363239845 s^-1Specific activity α:1.738393285857 × 10⁺¹⁸ Bq g^-1
46983602.320462 Ci g^-1Spin and parity:
(nuclear angular momentum)1/2-

Radioactive Decay

Half-life T_½ = 43.5(10) min (minutes) respectively 2.610 × 10³ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	⁹³Mo	22.6(6) %	3.593 MeV
Iso	⁹³Tc	77.4(6) %	0.392 MeV

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
⁹³Tc		2.75(5) h	9/2+
^93m2Tc	2185.16(15)	10.2(3) μs	(17/2)-

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 50) and isobaric (same nucleon number A = 93) with Technetium-93m1. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 50	Isobar A = 93
28	⁷⁸Ni
29	⁷⁹Cu
30	⁸⁰Zn
31	⁸¹Ga
32	⁸²Ge
33	⁸³As
34	⁸⁴Se	⁹³Se
35	⁸⁵Br	⁹³Br
36	⁸⁶Kr	⁹³Kr
37	⁸⁷Rb	⁹³Rb
38	⁸⁸Sr	⁹³Sr
39	⁸⁹Y	⁹³Y
40	⁹⁰Zr	⁹³Zr
41	⁹¹Nb	⁹³Nb
42	⁹²Mo	⁹³Mo
43	⁹³Tc	⁹³Tc
44	⁹⁴Ru	⁹³Ru
45	⁹⁵Rh	⁹³Rh
46	⁹⁶Pd	⁹³Pd
47	⁹⁷Ag	⁹³Ag
48	⁹⁸Cd
49	⁹⁹In
50	¹⁰⁰Sn