85
39
Y
element 		Information about Yttrium-85:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation
    Mass-Energy Data:

    Atomic Mass:84.916427±0.000027amu
    Excess Mass (Δ):-77.847665±0.025241MeV
    Binding Energy:733.398321±0.025241MeV
    β- Decay Energy:-4.693000±0.099000MeV
"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.
Radioactive Decay Data:

  • Spin: (1/2)-
  • Half life: 2.68 h ( 9648 sec., λ = 7.18436×10-05 s-1)
  • Mode of decay:
    E.C.
     to
    85
    38
    Sr
       (Q = 3.250 MeV)
    Meta state at 0.020 Mev
  • Spin: 9/2+ 2.68
  • Half life: 4.86 h ( 17496 sec., λ = 3.96175×10-05 s-1)
  • Mode of decay:
    E.C.
     to
    85
    38
    Sr
       (Q = 3.270 MeV)
  • Mode of decay: γ (IT) to
    85
    39
    Y
       (Q = 0.020 MeV)   Branch ratio: <0.0020 %

  • Possible parent nuclides:
    E.C. from
    85
    40
    Zr
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
204.9 h9/2+ 6.2(5) [87Y 381]NO/SHFI 43 477 (88)
266170 ns5/2- +1.33(8) TDPADBAPS 27 26 (82)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.