Americium (Z=95)
239Am 241Am 242Am 243Am
Recommended† magnetic dipole moments
Isotope Energy [keV] t1/2 Spin/Parity μ [nm] Method Recommended Tables
242Am 0 16.0 h 1- +0.3854(17) AB/D INDC(NDS)-0794
49 152 y 5- +1.00(5) LRS INDC(NDS)-0794
2200 14 ms "(2+ 3-)" INDC(NDS)-0794


Recommended† electric quadrupole moments
Isotope Energy [keV] t1/2 Spin/Parity Q [b] Method Recommended Tables
242Am 0 16.0 h 1- -2.44((3) AB INDC(NDS)-0833
49 152 y 5- +6.7(4) ABLS 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
242Am 0. 16.0 h 1- +0.3879(15) AB/D 1966AR04 10.1103/PhysRev.144.994
-2.4(7) [241Am] AB 1966AR04
1961MA27
2013STZZ		 10.1103/PhysRev.144.994
10.1103/PhysRev.124.1904
49. 152 y 5- +1.00(5) [241Am] ABLFS 1988BE30 10.1007/BF01294866
+7(2) [241Am] ABLFS 1988BE30
2013STZZ		 10.1007/BF01294866
2200. 14.0 ms (2+,3-) -1.14(8) [I=2] LRSRD 1996BA52 10.1007/BF02150196
-1.14(8) [I=3] LRSRD 1996BA52 10.1007/BF02150196

† 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.