44-Ru-99
 basic
 fission yield
 n-XS summary
 XS graphs

 element
44-ruthenium-99

  • Atomic Mass: 98.9059393 +- 0.0000021 amu
  • Excess Mass: -87616.958 +- 2.002 keV
  • Binding Energy: 852254.366 +- 2.006 keV
  • Beta Decay Energy: B- -2042.574 +- 6.876 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.
  • Atomic Percent Abundance: 12.7%
  • Spin: 5/2+
  • Stable Isotope

  • Possible parent nuclides:
    Beta from Tc-99
    Electron capture from Rh-99
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
0stable5/2+ -0.641(5) AB/DZP A280 217 (77)
g(99/101)gs=0.8922344(4) [101Ru]NZP A309 119 (82)
+0.079(4) [101Ru]AB/RBk82HFS 83 (82)/ZP A280 217 (77)
9020.5 ns3/2+ -0.284(6) TDPACPR 139 B532 (65)
-0.292(3) [99Ru]MEJDal 1253 (73)
+0.231(12) [99Ru]MEPR C13 1132 (76)/CPL 29 379 (74)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.