81-Tl-199
 basic

 element
81-thallium-199

  • Atomic Mass: 198.9698138 +- 0.0001058 amu
  • Excess Mass: -28118.225 +- 98.518 keV
  • Binding Energy: 1570940.839 +- 98.519 keV
  • Beta Decay Energy: B- -2883.483 +- 91.646 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: 1/2+
  • Half life: 7.42 h
  • Mode of decay: Electron capture to Hg-199
    • Decay energy: 1.440 MeV

    Meta state at 0.750 Mev
  • Spin: 9/2-
  • Half life: 28.4 ms
  • Mode of decay: IT
    • Decay energy: 0.750 MeV

  • Possible parent nuclides:
    Electron capture from Pb-199
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)
Magnetic Dipole Moments and Electric Quadrupole Moments
Ex(kev)T1/2Spin    m(nm)    Q(b)    Ref. Std.MethodReference
07.4 h1/2+ +1.60(2) [205Tl]OJOSA 56 1604 (66)
+1.58(7) "AB/D, R"PS 30 164 (84)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.