See also: List of individual Samarium isotopes (and general data sources).
General data
Name of the isotope:Samarium-134; Sm-134Symbol:134Sm or 13462SmMass number A:134 (= number of nucleons)Atomic number Z:62 (= number of protons)Neutrons N:72Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.1612903225806 (= neutron-proton ratio)Neutron excess (N-Z):10Isotopic mass:133.93411(21) u (atomic weight of Samarium-134)Nuclide mass:133.9001007 u (calculated nuclear mass without electrons)Mass excess:-61.37614 MeVMass defect:1.174915936 u (per nucleus)Nuclear binding energy:1094.42714489 MeV (per nucleus) 8.16736675 MeV (average binding energy per nucleon)Separation energy:SN = 12.22(36) MeV (first neutron) SP = 3.26(20) MeV (first proton)Half-life:9.5(8) sDecay constant λ:0.072962861111573 s-1Specific activity α:3.28066255762 × 10+20 Bq g-1 8866655561.1568 Ci g-1Spin and parity: (nuclear angular momentum)0+Year of discovery:1977
The following table shows the atomic nuclei that are isotonic (same neutron number N = 72) and isobaric (same nucleon number A = 134) with Samarium-134. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
