18-Ar-40
 basic
 n-XS summary
 XS graphs

 element
18-argon-40

  • Atomic Mass: 39.9623831 +- 0.0000000 amu
  • Excess Mass: -35039.890 +- 0.004 keV
  • Binding Energy: 343810.441 +- 0.052 keV
  • Beta Decay Energy: B- -1504.873 +- 0.271 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: 99.6003%
  • Spin: 0+
  • Stable Isotope

  • Possible parent nuclides:
    Beta from Cl-40
    Electron capture from K-40
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
14611.12 ps2+ -0.2(2) TFNP A549 304 (92)
+0.01(4) CERPRL 24 903 (70)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.