209
83
Bi


Basic Info

n-XS summary

element 		Information about Bismuth-209:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

Bi-209 has been known as stable nuclide. But, alpha decay of Bi-209 with a half time of 2*1019 years was found, recently.
Reference : PIERRE DE MARCILLAC, NOEL CORON, GERARD DAMBIER, JACQUES LEBLANC & JEAN-PIERRE MOALIC, " Experimental detection of a-particles from the radioactive decay of natural bismuth," Nature 422, 876-878 (2003); doi:10.1038/nature01541
contributed by :
    Mass-Energy Data:

    Atomic Mass:208.980383±0.000003amu
    Excess Mass (Δ):-18.272891±0.002992MeV
    Binding Energy:1640.244025±0.003005MeV
    β- Decay Energy:-1.893305±0.001599MeV
"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:

  • Atomic Percent Abundance: 100%
  • Spin: 9/2-
  • Stable Isotope

  • Possible parent nuclides:
    β- from
    209
    82
    Pb
    E.C. from
    209
    84
    Po
    α from
    213
    85
    At
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
0stable9/2- +4.1103(5) d RZP D37 281 (96)
+4.1106(2) [2H]NPR 89 595 (53)/PR 81 20 (51)
-0.37(3) a Mu-XNP A181 14 (72)/PR 169 1 (68)
-0.55(1) ABZP A310 27 (83)
-0.77(1) st ABZP A310 27 (83)
-0.40(5) RPS 10 171 (74)
-0.39(3) OCJP 45 2249 (67)/JOSA 60 869 (70)
-0.50(8) a Pi-XZP A286 215 (78)
-0.5(2) a Pi-XNP A355 383 (81)
256314 fs(9/2)+ 3.5(7) Mu-XNP A181 14 (72)
+0.11(5) a Mu-XNP A181 14 (72)
274112 ps15/2+ 6.2(12) Mu-XNP A181 14 (72)
0.0(4) a Mu-XNP A181 14 (72)
298618 ns19/2+ 3.50(8) TDPADPR C17 1359 (78)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.