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Tungsten-183

Properties and data of the isotope 183W.


Content

See also: list of Tungsten isotopes.

 

General data

Name of the isotope:Tungsten-183; W-183Symbol:183W or 18374WMass number A:183 (= number of nucleons)Atomic number Z:74 (= number of protons)Neutrons N:109Isotopic mass:182.950223(6) u (atomic weight of Tungsten-183)Nuclide mass:182.9096321 u (calculated nuclear mass without electrons)Mass excess:-46.36698 MeVMass defect:1.573305212 u (per nucleus)Nuclear binding energy:1465.52436515 MeV (per nucleus)
8.00832986 MeV (average binding energy per nucleon)
Separation energy:SN = 6.19084(4) MeV (first neutron)
SP = 7.2246(14) MeV (first proton)
Half-life:6.7 × 1020 aDecay constant λ:3.280530285028 × 10-29 s-1Specific activity α:1.085484366578 × 10-7 Bq g-1
2.933741531293 × 10-18 Ci g-1
Spin and parity:
(nuclear angular momentum)
1/2-Magnetic dipole moment:μ(μN) = + 0.11778476(9)Charge radius:5.3611(20) femtometer fmYear of discovery:1930

 

Radioactive Decay

Half-life T½ = 6.7 × 1020 a respectively 2.112912 × 1028 seconds s.

Decay modeDaughterProbabilityDecay energyγ energy
(intensity)
α179Hf?1.6724(16) MeV

 

Parent Nuclides

Direct parent isotopes are: 183Re, 183Ta.

 

Occurrence

Comparison of the natural Tungsten isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

 

Atomic Mass maQuantityHalf-lifeSpin
Tungsten
Isotopic mixture
183.84 u100 %
Isotope 180W179.94671(2) u0.12(1) %1.8(2) × 1018 a0+
Isotope 182W181.948204(6) u26.50(16) %stable0+
Isotope 183W182.950223(6) u14.31(4) %6.7 × 1020 a1/2-
Isotope 184W183.950931(6) u30.64(2) %stable0+
Isotope 186W185.95436(2) u28.43(19) %stable0+

 

NMR data

Nuclear magnetic properties of the NMR active Nuclide 183W

Isotope:183W-NMRQuantity:14.31(4) %Spin:1/2-Nuclearmagnetic moment
μ/μN:
+ 0.11778476(9)Gyromagnetic ratio γ:1.1283 · 107 rad T-1 s-1Nuclear g-factor:gl = 0.23556952Resonance frequency:v0 = 1.7957 at 1 TRelative Sensitivity:0.00008 (H0 = const.)
0.0422 (v0 = const.)
[related to 1H = 1.000]

 

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear IsomerExcitation EnergyHalf-lifeSpin
183mW309.492(4) keV5.3(8) s11/2+

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 109) and isobaric (same nucleon number A = 183) with Tungsten-183. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 109Isobar A = 183
68177Er
69178Tm
70179Yb183Yb
71180Lu183Lu
72181Hf183Hf
73182Ta183Ta
74183W183W
75184Re183Re
76185Os183Os
77186Ir183Ir
78187Pt183Pt
79188Au183Au
80189Hg183Hg
81190Tl183Tl
82191Pb183Pb
83192Bi
84193Po
85194At
86195Rn

 

External data and identifiers

Adopted Levels, Gammas:NuDat 183W

 


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Last update: 2020-10-21


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