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Oxygen-24

Properties and data of the isotope 24O.


Contents

 

Oxygen-24 isotope

Oxygen-24 is a radioisotope of the chemical element oxygen, which has 16 neutrons in its atomic nucleus in addition to the element-specific 8 protons; the sum of the number of these atomic nucleus building blocks results in a mass number of 24. The very short-lived, only artificially produced, unstable and thus radioactive nuclide has no practical significance; the study of 24O is exclusively for academic purposes.

The radioactive nuclide was discovered by irradiating thorium-232 with neon-22 ions accelerated to 174 MeV [1].

See also: list of Oxygen isotopes.

 

General data

Name of the isotope:Oxygen-24; O-24Symbol:24O or 248OMass number A:24 (= number of nucleons)Atomic number Z:8 (= number of protons)Neutrons N:16Isotopic mass:24.01986(18) u (atomic weight of Oxygen-24)Nuclide mass:24.0154714 u (calculated nuclear mass without electrons)Mass excess:18.49947 MeVMass defect:0.181378912 u (per nucleus)Nuclear binding energy:168.95336825 MeV (per nucleus)
7.03972368 MeV (average binding energy per nucleon)
Separation energy:SN = 4.192(205) MeV (first neutron)
SP = 25.509(452) MeV (first proton)
Half-life:0.0774(45) sDecay constant λ:8.9553899297151 s-1Specific activity α:2.247109150516 × 10+23 Bq g-1
6073267974369.7 Ci g-1
Spin and parity:
(nuclear angular momentum)
0+Year of discovery:1970

 

Radioactive Decay

Half-life T½ = 0.0774(45) s respectively 7.74 × 10-2 seconds s.

Decay
mode
DaughterProbabilityDecay energyγ energy
(intensity)
β-24F57(4) %10.96(19) MeV
β-, n23F43(4) %7.144(168) MeV

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 16) and isobaric (same nucleon number A = 24) with Oxygen-24. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

ZIsotone N = 16Isobar A = 24
521B
622C
723N24N
824O24O
925F24F
1026Ne24Ne
1127Na24Na
1228Mg24Mg
1329Al24Al
1430Si24Si
1531P24P
1632S
1733Cl
1834Ar
1935K
2036Ca
2137Sc
2238Ti

 

External data and identifiers

Adopted Levels, Gammas:NuDat 24O

 

Literature and References

[1] - A. G. Artukh et al.:
New isotopes 21N, 23O, 24O and 25F, produced in nuclear reactions with heavy ions.
In: Physics Letters B, 32(1), (1970), DOI 10.1016/0370-2693(70)90332-1.

 


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Last update: 2024-10-10


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