Actinium (Z=89)
215Ac 217Ac 227Ac
Recommended† magnetic dipole moments
Isotope Energy [keV] t1/2 Spin/Parity μ [nm] Method Recommended Tables
215Ac 0 0.17 s 9/2- +4.14(6) INDC(NDS)-0794
1621 30 ns (17/2-) 7.74(13) TDPAD INDC(NDS)-0816
1796 185 ns (21/2-) 9.56(16) TDPAD INDC(NDS)-0816
2438+x 335 ns (29/2+) 14.98(22) TDPAD INDC(NDS)-0816


Recommended† electric quadrupole moments
Isotope Energy [keV] t1/2 Spin/Parity Q [b] Method Recommended Tables
215Ac 0 0.17 s 9/2- +0.04(10) INDC(NDS)-0833


Compiled‡ magnetic dipole and electric quadrupole moments from published articles
Isotope Energy [keV] t1/2 Spin/Parity μ [nm] Q [b] Ref. Std Method NSR keyword doi
215Ac 1621. 30 ns 17/2- 7.82(16) TDPAD 1983DE08 10.1007/BF01433610
1796. 185 ns 21/2- 9.7(2) TDPAD 1983DE08 10.1007/BF01433610
2438+x. 335 ns 29/2+ 15.1(3) TDPAD 1983DE08 10.1007/BF01433610

† Recommended magnetic moments are for the bare nucleus with published results corrected consistently for diamagnetism (including error estimate).
  Where appropriate published results are also adjusted to the most recent adopted half-life for the state.
  Recommended quadrupole moments are adjusted using the best electric field gradient calculation for the system concerned.
  For details see the Reports referenced.

‡ In this listing published results are given without adjustment or correction.