95-Am-239
 basic

 element
95-americium-239

  • Atomic Mass: 239.0530185 +- 0.0000030 amu
  • Excess Mass: 49386.389 +- 2.803 keV
  • Binding Energy: 1805336.188 +- 2.821 keV
  • Beta Decay Energy: B- -1800.000 +- 100.000 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: (5/2)-
  • Half life: 11.9 h
  • Mode of decay: Electron capture to Pu-239
    • Branch ratio: 99.99 %
    • Decay energy: 0.803 MeV
  • Mode of decay: Alpha to Np-235
    • Branch ratio: 0.01 %
    • Decay energy: 5.924 MeV

  • Possible parent nuclides:
    Electron capture from Cm-239
    Alpha from Bk-243
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
~2500163 ns(7/2+) (+)2.6(2) TDPADPL163B 327 (85)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.