element
Information about Radium-229:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:229.034820±0.000067amu
    Excess Mass (Δ):32.434904±0.062117MeV
    Binding Energy:1747.050920±0.062118MeV
    β- Decay Energy:1.760000±0.040000MeV
"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: 5/2(+)
  • Half life: 4.0 min ( 240 sec., λ = 0.00288811 s-1)
  • Mode of decay:
    β-
    to
    229
    89
    Ac
      (Q = 1.760 MeV)
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
04.0 m5/2(+) +0.503(3) "[213,225Ra]""CFBLS, R"NP A483 244 (88)/PRL 59 771 (87)
+3.1(2) st "[221,223Ra]"CFBLSZP D11 105 (89)
+3.0(3) st "CFBLS, R"NP A483 244 (88)/ZP D4 227 (87)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.