91
43
Tc
element 		Information about Technetium-91:

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

    Atomic Mass:90.918428±0.000215amu
    Excess Mass (Δ):-75.983631±0.200311MeV
    Binding Energy:776.832810±0.200311MeV
    β- Decay Energy:-7.404663±0.538662MeV
"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: (9/2)+
  • Half life: 3.14 min ( 188.4 sec., λ = 0.00367913 s-1)
  • Mode of decay:
    E.C.
     to
    91
    42
    Mo
       (Q = 6.220 MeV)
    Meta state at 0.350 Mev
  • Spin: (1/2)- 3.14
  • Half life: 3.3 min ( 198 sec., λ = 0.00350074 s-1)
  • Mode of decay:
    E.C.
     to
    91
    42
    Mo
       (Q = 6.570 MeV)
  • Mode of decay: γ (IT) to
    91
    43
    Tc
       (Q = 0.350 MeV)   Branch ratio: <1.00 %

  • Possible parent nuclides:
    E.C. from
    91
    44
    Ru
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)