91-Pa-229
 basic
 XS graphs

 element
91-protactinium-229

  • Atomic Mass: 229.0320886 +- 0.0000097 amu
  • Excess Mass: 29890.335 +- 9.028 keV
  • Binding Energy: 1747248.429 +- 9.033 keV
  • Beta Decay Energy: B- -1311.112 +- 11.245 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: (5/2+)
  • Half life: 1.50 d
  • Mode of decay: Electron capture to Th-229
    • Branch ratio: 99.52 %
    • Decay energy: 0.316 MeV
  • Mode of decay: Alpha to Ac-225
    • Branch ratio: 0.48 %
    • Decay energy: 5.841 MeV

  • Possible parent nuclides:
    Electron capture from U-229
    Alpha from Np-233
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)