69-Tm-155
 basic

 element
69-thulium-155

  • Atomic Mass: 154.9391916 +- 0.0000143 amu
  • Excess Mass: -56642.687 +- 13.317 keV
  • Binding Energy: 1253715.337 +- 13.318 keV
  • Beta Decay Energy: B- -6149.000 +- 298.000 keV #
"The 1995 update to the atomic mass evaluation" by G.Audi and A.H.Wapstra, Nuclear Physics A595 vol. 4 p.409-480, December 25, 1995.
  • Spin: 11/2-)
  • Half life: 21.6 s
  • Mode of decay: Electron capture to Er-155
    • Branch ratio: 98.10 %
    • Decay energy: 5.580 MeV
  • Mode of decay: Alpha to Ho-151
    • Branch ratio: 1.90 %
    • Decay energy: 4.571 MeV

    Meta state at 0.041 Mev
  • Spin: (1/2+)
  • Half life: 45 s
  • Mode of decay: Electron capture to Er-155
    • Branch ratio: >92.00 %
    • Decay energy: 5.621 MeV
  • Mode of decay: Alpha to Ho-151
    • Branch ratio: <8.00 %
    • Decay energy: 4.612 MeV

  • Possible parent nuclides:
    Electron capture from Yb-155
    Alpha from Lu-159
R.R.Kinsey, et al.,The NUDAT/PCNUDAT Program for Nuclear Data,paper submitted to the 9 th International Symposium of Capture-Gamma_raySpectroscopy and Related Topics, Budapest, Hungary, Octover 1996.Data extracted from NUDAT database (Jan. 14/1999)