99-Es-253
 basic
 XS graphs

 element
99-einsteinium-253

  • Atomic Mass: 253.0848180 +- 0.0000034 amu
  • Excess Mass: 79007.422 +- 3.143 keV
  • Binding Energy: 1885584.262 +- 3.161 keV
  • Beta Decay Energy: B- -333.741 +- 4.304 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: 7/2+
  • Half life: 20.47 d
  • Mode of decay: Alpha to Bk-249
    • Decay energy: 6.739 MeV
  • Mode of decay: SF
    • Branch ratio: 8.7E-6 %

  • Possible parent nuclides:
    Beta from Cf-253
    Electron capture from Fm-253
    Alpha from Md-257
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
020.4 d7/2+ +4.10(7) AB/DPR A11 499 (75)
6.7(8) st ABPR A11 499 (75)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.