81-Tl-201
 basic
 XS graphs

 element
81-thallium-201

The biological characteristics of thallium-201 is known to be similar to those of potassium as a transport substrate in the presence of glucose, insulin or phobol myristate acetate (PMA).
  • Atomic Mass: 200.9708038 +- 0.0000164 amu
  • Excess Mass: -27196.109 +- 15.286 keV
  • Binding Energy: 1586161.368 +- 15.288 keV
  • Beta Decay Energy: B- -1902.874 +- 34.455 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: 72.912 h
  • Mode of decay: Electron capture to Hg-201
    • Decay energy: 0.483 MeV

    Meta state at 0.920 Mev
  • Spin: (9/2-)
  • Half life: 2.035 ms
  • Mode of decay: IT
    • Decay energy: 0.920 MeV

  • Possible parent nuclides:
    Electron capture from Pb-201
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
073 h1/2+ +1.605(2) "[203,205Tl]"CFBLSPR C36 2560 (87)
+1.60(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.