Basic Info

Fission Yield

n-XS summary


element
Information about Promethium-149:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:148.918329±0.000005amu
    Excess Mass (Δ):-76.075853±0.004452MeV
    Binding Energy:1230.979394±0.004457MeV
    β- Decay Energy:1.070915±0.003512MeV
"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.
Radioactive Decay Data:

  • Spin: 7/2+
  • Half life: 53.08 h ( 191088 sec., λ = 3.62737×10-06 s-1)
  • Mode of decay:
    β-
    to
    149
    62
    Sm
      (Q = 1.071 MeV)

  • Possible parent nuclides:
    β- from
    149
    60
    Nd
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
053.1 h7/2+ 3.3(5) NO/SPRS 259A 377 (60)/PR 130 1100 (63)
1142.54 ns5/2+ +2.13(15) IPACIzUz 1970n2 65 (70)
2.0(2) TDPACNP A159 494 (70)
1893.24 ns3/2+ +1.09(15) IPACIzUz 1970n2 65 (70)
2.3(6) TDPACNP A159 494 (70)
21180 ps5/2+ +2.2(4) IPACIzUz 1970n2 65 (70)
2702.64 ns7/2- +2.19(11) IPACIzUz 1970n2 65 (70)
3.6(2) TDPACNP A159 494 (70)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.