77
33
As


Basic Info

Fission Yield

element 		Information about Arsenic-77:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation
    Mass-Energy Data:

    Atomic Mass:76.920648±0.000002amu
    Excess Mass (Δ):-73.916177±0.002188MeV
    Binding Energy:669.590371±0.002190MeV
    β- Decay Energy:0.682871±0.001763MeV
"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: 3/2-
  • Half life: 38.83 h ( 139788 sec., λ = 4.95856×10-06 s-1)
  • Mode of decay:
    β-
     to
    77
    34
    Se
       (Q = 0.683 MeV)
    Meta state at 0.475 Mev
  • Spin: 9/2+ 38.83
  • Half life: 114.0 µs ( 0.000114 sec., λ = 6080.24 s-1)
  • Mode of decay: γ (IT) to
    77
    33
    As
       (Q = 0.475 MeV)

  • Possible parent nuclides:
    β- from
    77
    32
    Ge
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
264304 ps5/2- +0.74(2) TDPACNP A500 277 (89)
+0.83(7) IPACNP A217 177 (73)
<0.75 TDPACHFI 59 121 (90)
476116 ms9/2+ +5.525(9) SOPADARHMI 53 (69)
63260 ps5/2+ +2.5(4) IPACPR C10 774 (74)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.