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Barium-148

Properties and data of the isotope 148Ba.


Contents

See also: list of Barium isotopes.

 

General data

Name of the isotope:Barium-148; Ba-148Symbol:148Ba or 14856BaMass number A:148 (= number of nucleons)Atomic number Z:56 (= number of protons)Neutrons N:92Isotopic mass:147.93817(7) u (atomic weight of Barium-148)Nuclide mass:147.9074516 u (calculated nuclear mass without electrons)Mass excess:-57.59427 MeVMass defect:1.297204064 u (per nucleus)Nuclear binding energy:1208.33780239 MeV (per nucleus)
8.16444461 MeV (average binding energy per nucleon)
Separation energy:SN = 5.40(7) MeV (first neutron)
SP = 12.96(6) MeV (first proton)
Half-life:612(17) msDecay constant λ:1.1325934322875 s-1Specific activity α:4.639889242363 × 10+21 Bq g-1
125402411955.77 Ci g-1
Spin and parity:
(nuclear angular momentum)
0+Charge radius:4.9731(167) femtometer fmYear of discovery:1979

 

Radioactive Decay

Half-life T½ = 612(17) ms respectively 6.12 × 10-1 seconds s.

Decay
mode
DaughterProbabilityDecay energyγ energy
(intensity)
β-148La< 100 %5.11(6) MeV
β-, n147La0.4(3) %1.01(6) MeV

 

Parent Nuclides

Direct parent isotope is: 148Cs.

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 92) and isobaric (same nucleon number A = 148) with Barium-148. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

ZIsotone N = 92Isobar A = 148
53145I
54146Xe148Xe
55147Cs148Cs
56148Ba148Ba
57149La148La
58150Ce148Ce
59151Pr148Pr
60152Nd148Nd
61153Pm148Pm
62154Sm148Sm
63155Eu148Eu
64156Gd148Gd
65157Tb148Tb
66158Dy148Dy
67159Ho148Ho
68160Er148Er
69161Tm148Tm
70162Yb148Yb
71163Lu
72164Hf
73165Ta
74166W
75167Re
76168Os
77169Ir
78170Pt
79171Au
80172Hg

 

External data and identifiers

Adopted Levels, Gammas:NuDat 148Ba

 


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Last update: 2020-10-19


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