Ruthenium-93m1

Properties and data of the isotope ^93m1Ru.

Content

General data

Name of the isotope:Ruthenium-93m1; Ru-93m1Symbol:^93m1Ru or 93m144RuMass number A:93 (= number of nucleons)Atomic number Z:44 (= number of protons)Neutrons N:49Isotopic mass:92.9171044(22) u (atomic weight of Ruthenium-93m1)
Excitation energy: 734.40(10) keVNuclide mass:92.8929681 u (calculated nuclear mass without electrons)Mass excess:-77.21675 MeVMass defect:0.851777892 u (per nucleus)Nuclear binding energy:793.42599573 MeV (per nucleus)
8.53146232 MeV (average binding energy per nucleon)Half-life:10.8(3) sDecay constant λ:0.064180294496291 s^-1Specific activity α:4.201117107487 × 10⁺²⁰ Bq g^-1
11354370560.778 Ci g^-1Spin and parity:
(nuclear angular momentum)(1/2)-

Radioactive Decay

Half-life T_½ = 10.8(3) s respectively 1.08 × 10¹ seconds s.

Decay mode	Daughter	Probability
EE/β⁺	⁹³Tc	78.0(23) %
ε, p	⁹²Mo	0.027(5) %
Iso	⁹³Ru	22.0(23) %

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
⁹³Ru		59.7(6) s	(9/2)+
^93m2Ru	2085.5(9) keV	2.49(15) μs	(21/2)+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 49) and isobaric (same nucleon number A = 93) with Ruthenium-93m1. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 49	Isobar A = 93
27	⁷⁶Co
28	⁷⁷Ni
29	⁷⁸Cu
30	⁷⁹Zn
31	⁸⁰Ga
32	⁸¹Ge
33	⁸²As
34	⁸³Se	⁹³Se
35	⁸⁴Br	⁹³Br
36	⁸⁵Kr	⁹³Kr
37	⁸⁶Rb	⁹³Rb
38	⁸⁷Sr	⁹³Sr
39	⁸⁸Y	⁹³Y
40	⁸⁹Zr	⁹³Zr
41	⁹⁰Nb	⁹³Nb
42	⁹¹Mo	⁹³Mo
43	⁹²Tc	⁹³Tc
44	⁹³Ru	⁹³Ru
45	⁹⁴Rh	⁹³Rh
46	⁹⁵Pd	⁹³Pd
47	⁹⁶Ag	⁹³Ag
48	⁹⁷Cd
49	⁹⁸In
50	⁹⁹Sn