87-Fr-212
 basic

 element
87-francium-212

  • Atomic Mass: 211.9961950 +- 0.0000277 amu
  • Excess Mass: -3544.346 +- 25.771 keV
  • Binding Energy: 1646600.035 +- 25.773 keV
  • Beta Decay Energy: B- -3342.670 +- 29.038 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: 5+
  • Half life: 20.0 min
  • Mode of decay: Electron capture to Rn-212
    • Branch ratio: 57.00 %
    • Decay energy: 5.117 MeV
  • Mode of decay: Alpha to At-208
    • Branch ratio: 43.00 %
    • Decay energy: 6.529 MeV

  • Possible parent nuclides:
    Alpha from Ac-216
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
019.3 m5+ +4.62(9) [211Fr]CFBLSEPL 3 175 (87)
+4.62(9) [211Fr]ABLSPL 163B 66 (85)
-0.10(1) st ABLSPL 163B 66 (85)
155127 ms11+ 9.89(4) SOPADHFI 3 297 (77)
2492604 ns(15-) +15.65(12) TDPADPL B217 38 (89)
15.60(15) TDPADNP A448 137 (86)
0.84(13) [213Fr 2538]TDPADNP A516 145 (90)
-0.80(12) [213Fr 2538]LEMSPR C43 514 (91)
48344.2 ns22+ 22(4) TDPADNP A448 137 (86)
5854312 ns(27-) 21.9(3) TDPADNP A448 137 (86)
1.7(3) [213Fr 2538]TDPADNP A516 145 (90)
-1.5(3) [213Fr 2538]LEMSPR C43 514 (91)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.