Barium-148
Properties and data of the isotope 148Ba.
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-1Spin 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 | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
β- | 148La | < 100 % | 5.11(6) MeV | |
β-, n | 147La | 0.4(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.
Z | Isotone N = 92 | Isobar A = 148 |
53 | 145I | |
54 | 146Xe | 148Xe |
55 | 147Cs | 148Cs |
56 | 148Ba | 148Ba |
57 | 149La | 148La |
58 | 150Ce | 148Ce |
59 | 151Pr | 148Pr |
60 | 152Nd | 148Nd |
61 | 153Pm | 148Pm |
62 | 154Sm | 148Sm |
63 | 155Eu | 148Eu |
64 | 156Gd | 148Gd |
65 | 157Tb | 148Tb |
66 | 158Dy | 148Dy |
67 | 159Ho | 148Ho |
68 | 160Er | 148Er |
69 | 161Tm | 148Tm |
70 | 162Yb | 148Yb |
71 | 163Lu | |
72 | 164Hf | |
73 | 165Ta | |
74 | 166W | |
75 | 167Re | |
76 | 168Os | |
77 | 169Ir | |
78 | 170Pt | |
79 | 171Au | |
80 | 172Hg | |
External data and identifiers
Last update: 2020-10-19
Perma link: https://www.chemlin.org/isotope/barium-148
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