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Barium-132

Properties and data of the isotope 132Ba.


Content

See also: list of Barium isotopes.

 

General data

Name of the isotope:Barium-132; Ba-132Symbol:132Ba or 13256BaMass number A:132 (= number of nucleons)Atomic number Z:56 (= number of protons)Neutrons N:76Isotopic mass:131.9050611(11) u (atomic weight of Barium-132)Nuclide mass:131.8743427 u (calculated nuclear mass without electrons)Mass excess:-88.43502 MeVMass defect:1.191674308 u (per nucleus)Nuclear binding energy:1110.03746786 MeV (per nucleus)
8.40937476 MeV (average binding energy per nucleon)
Separation energy:SN = 9.8226(27) MeV (first neutron)
SP = 7.665(5) MeV (first proton)
Half-life:stableSpin and parity:
(nuclear angular momentum)
0+Charge radius:4.8303(47) femtometer fmYear of discovery:1936

 

Radioactive Decay

Half-life T½ = stable.

Decay modeDaughterProbabilityDecay energyγ energy
(intensity)
2 β+132Xe

 

Parent Nuclides

Direct parent isotopes are: 132La, 132Cs.

 

Occurrence

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

 

Atomic Mass maQuantityHalf-lifeSpin
Barium
Isotopic mixture
137.327 u100 %
Isotope 130Ba129.90632(2) u0.11(1) %1.6 × 1021 a0+
Isotope 132Ba131.9050611(11) u0.10(1) %stable0+
Isotope 134Ba133.904508(2) u2.42(15) %stable0+
Isotope 135Ba134.905688(2) u6.59(10) %stable3/2+
Isotope 136Ba135.904576(2) u7.85(24) %stable0+
Isotope 137Ba136.905827(2) u11.23(23) %stable3/2+
Isotope 138Ba137.905247(2) u71.70(29) %stable0+

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 76) and isobaric (same nucleon number A = 132) with Barium-132. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 76Isobar A = 132
42118Mo
43119Tc
44120Ru
45121Rh
46122Pd
47123Ag132Ag
48124Cd132Cd
49125In132In
50126Sn132Sn
51127Sb132Sb
52128Te132Te
53129I132I
54130Xe132Xe
55131Cs132Cs
56132Ba132Ba
57133La132La
58134Ce132Ce
59135Pr132Pr
60136Nd132Nd
61137Pm132Pm
62138Sm132Sm
63139Eu132Eu
64140Gd
65141Tb
66142Dy
67143Ho
68144Er
69145Tm

 

External data and identifiers

Adopted Levels, Gammas:NuDat 132Ba

 

Literature and References

[1] - A. P. Meshik, C. M. Hohenberg, O. V. Pravdivtseva, Ya. S. Kapusta:
Weak decay of 130Ba and 132Ba: Geochemical measurements.
In: Physical Review C, (2001), DOI 10.1103/PhysRevC.64.035205.

 


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Last update: 2020-10-19


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