103-Lr-257
 basic

 element
103-lawrencium-257

Contribution from TON user: Jag Tuli (tuli@bnlnd2.dne.bnl.gov)
For 257Lr there should be no SF branch.
3 Dec 1999

  • Atomic Mass: 257.0996060 +- 0.0002230 amu #
  • Excess Mass: 92782.000 +- 207.000 keV #
  • Binding Energy: 1900965.000 +- 207.000 keV #
  • Beta Decay Energy: B- -3229.000 +- 337.000 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: 0.646 s
  • Mode of decay: Alpha to Md-253
    • Decay energy: 9.010 MeV
  • Mode of decay: SF
    • Branch ratio: <0.0065 %
    • Decay energy: 9.010 MeV
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)