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Magnesium-38

Properties and data of the isotope 38Mg.


Content

See also: list of Magnesium isotopes.

 

General data

Name of the isotope:Magnesium-38; Mg-38Symbol:38Mg or 3812MgMass number A:38 (= number of nucleons)Atomic number Z:12 (= number of protons)Neutrons N:26Isotopic mass:38.03658(54) u (atomic weight of Magnesium-38)Nuclide mass:38.0299971 u (calculated nuclear mass without electrons)Mass excess:34.07405 MeVMass defect:0.2826082 u (per nucleus)Nuclear binding energy:263.24784265 MeV (per nucleus)
6.92757481 MeV (average binding energy per nucleon)
Separation energy:SN = 2.21(86) MeV (first neutron)
SP = 26.75(85) MeV (first proton)
Half-life:260 nsDecay constant λ:2665950.6944613 s-1Specific activity α:4.224929107287 × 10+28 Bq g-1
1.141872731699 × 10+18 Ci g-1
Spin and parity:
(nuclear angular momentum)
0+Year of discovery:2002

 

Radioactive Decay

Half-life T½ = 260 ns respectively 2.60 × 10-7 seconds s.

Decay modeDaughterProbabilityDecay energyγ energy
(intensity)
β-38Al100 %17.86(63) MeV
β-, n37Al?16.19(53) MeV
β-, n36Al?

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 26) and isobaric (same nucleon number A = 38) with Magnesium-38. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 26Isobar A = 38
1137Na38Na
1238Mg38Mg
1339Al38Al
1440Si38Si
1541P38P
1642S38S
1743Cl38Cl
1844Ar38Ar
1945K38K
2046Ca38Ca
2147Sc38Sc
2248Ti38Ti
2349V
2450Cr
2551Mn
2652Fe
2753Co
2854Ni
2955Cu
3056Zn

 

External data and identifiers

Adopted Levels, Gammas:NuDat 38Mg

 


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Last update: 2020-10-12


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