85-At-211
 basic

 element
85-astatine-211

  • Atomic Mass: 210.9874808 +- 0.0000041 amu
  • Excess Mass: -11661.552 +- 3.811 keV
  • Binding Energy: 1648210.626 +- 3.822 keV
  • Beta Decay Energy: B- -2891.919 +- 6.730 keV
"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.
  • Spin: 9/2-
  • Half life: 7.214 h
  • Mode of decay: Electron capture to Po-211
    • Branch ratio: 58.20 %
    • Decay energy: 0.786 MeV
  • Mode of decay: Alpha to Bi-207
    • Branch ratio: 41.80 %
    • Decay energy: 5.982 MeV

  • Possible parent nuclides:
    Electron capture from Rn-211
    Alpha from Fr-215
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
141735.1 ns21/2- +9.56(9) TDPADHFI 2 334 (76)/PR C11 243 (75)
0.53(5) B(E2)RPL 122B 27 (83)
264150.8 ns29/2+ +15.31(13) TDPADHFI 2 334 (76)/PR C11 243 (75)
1.00(5) RNP A591 104
1.0(2) [211At 1417]TDPADPL 122B 27 (83)
48164.2 ms39/2- 13.46(14) TDPADPS 31 333 (85)
1.9(3) [211At 2641]LEMSPR C43 2566 (91)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.