Actinium (Z=89)
212Ac 213Ac 214Ac 215Ac 217Ac 227Ac 228Ac 229Ac
Recommended† magnetic dipole moments
Isotope Energy [keV] t1/2 Spin/Parity μ [nm] Method Recommended Tables
227Ac 0 21.77 y 3/2- 1.22(4) ISLS INDC(NDS)-0915


Recommended† electric quadrupole moments
Isotope Energy [keV] t1/2 Spin/Parity Q [b] Method Recommended Tables
227Ac 0 21.77 y 3/2- +1.74(10) O/R 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
227Ac 0 21.77 y 3/2- 1.22(4) [215Ac] ISLS 2019VE07 PhysRevC.100.044321
+1.1(1) O 1955FR26 10.1103/PhysRev.98.1514
+1.22(17) not measured 2017GR18 PhysRevC.96.054331
+1.74(10) 2017GR18 PhysRevC.96.054331
+1.7(2) O 1955FR26 10.1103/PhysRev.98.1514

† 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.