element
Information about Uranium-241:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:241.060330±0.000320amu #
    Excess Mass (Δ):56.197000±0.298000MeV #
    Binding Energy:1817.015000±0.298000MeV #
    β- Decay Energy:1.941000±0.306000MeV #
"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.