Thulium-160
Properties and data of the isotope 160Tm.
See also: list of Thulium isotopes.
General data
Name of the isotope:Thulium-160; Tm-160Symbol:160Tm or 16069TmMass number A:160 (= number of nucleons)Atomic number Z:69 (= number of protons)Neutrons N:91Isotopic mass:159.93526(4) u (atomic weight of Thulium-160)Nuclide mass:159.8974114 u (calculated nuclear mass without electrons)Mass excess:-60.30492 MeVMass defect:1.393174564 u (per nucleus)Nuclear binding energy:1297.73374732 MeV (per nucleus)
8.11083592 MeV (average binding energy per nucleon)Separation energy:SN = 7.80(4) MeV (first neutron)
SP = 3.03(3) MeV (first proton)Half-life:9.4(3) minDecay constant λ:0.0012289843626949 s-1Specific activity α:4.65479053258 × 10+18 Bq g-1
125805149.5293 Ci g-1Spin and parity:
(nuclear angular momentum)1-Magnetic dipole moment:μ(μN) = + 0.156(18)Quadrupole moment Q:+ 0.582(44) barn (100 fm2)Nuclear g-factor:gl = 0.156Charge radius:5.1504(55) femtometer fmYear of discovery:1970
Radioactive Decay
Half-life T½ = 9.4(3) min (minutes) respectively 5.64 × 102 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| EC/β+ | 160Er | 100 % | 5.76(4) MeV | |
Parent Nuclides
Direct parent isotope is: 160Yb.
Nuclear Isomers
Nuclear isomers or excited states with the activation energy in keV related to the ground state.
| Nuclear Isomer | Excitation Energy | Half-life | Spin |
|---|
| 160mTm | 70(20) keV | 74.5(15) s | 5 |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 91) and isobaric (same nucleon number A = 160) with Thulium-160. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 91 | Isobar A = 160 |
|---|
| 52 | 143Te | |
| 53 | 144I | |
| 54 | 145Xe | |
| 55 | 146Cs | |
| 56 | 147Ba | |
| 57 | 148La | |
| 58 | 149Ce | |
| 59 | 150Pr | 160Pr |
| 60 | 151Nd | 160Nd |
| 61 | 152Pm | 160Pm |
| 62 | 153Sm | 160Sm |
| 63 | 154Eu | 160Eu |
| 64 | 155Gd | 160Gd |
| 65 | 156Tb | 160Tb |
| 66 | 157Dy | 160Dy |
| 67 | 158Ho | 160Ho |
| 68 | 159Er | 160Er |
| 69 | 160Tm | 160Tm |
| 70 | 161Yb | 160Yb |
| 71 | 162Lu | 160Lu |
| 72 | 163Hf | 160Hf |
| 73 | 164Ta | 160Ta |
| 74 | 165W | 160W |
| 75 | 166Re | 160Re |
| 76 | 167Os | 160Os |
| 77 | 168Ir | |
| 78 | 169Pt | |
| 79 | 170Au | |
| 80 | 171Hg | |
External data and identifiers
Last update: 2020-10-11
Perma link: https://www.chemlin.org/isotope/thulium-160
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