Erbium (Z=68)
152Er 153Er 154Er 155Er 156Er 157Er 158Er 159Er 160Er 161Er 162Er 163Er 164Er 165Er 166Er 167Er 168Er 169Er 170Er 171Er
Recommended† magnetic dipole moments
Isotope Energy [keV] t1/2 Spin/Parity μ [nm] Method Recommended Tables
168Er 80 1.85 ns 2+ +0.656(13) ME INDC(NDS)-0816
264 114 ps 4+ +1.2(2) TF INDC(NDS)-0816
549 12.0 ps 6+ +1.8(3) TF INDC(NDS)-0816
821 2.8 ps 2+ +0.77(10) TF INDC(NDS)-0816
928 3.56 ps 8+ +2.4(4) TF INDC(NDS)-0816
1094 109 ns 4- +0.96(4) TDPAC INDC(NDS)-0816
1396 1.45 ps 10+ +3.1(8) TF INDC(NDS)-0816


Recommended† electric quadrupole moments
Isotope Energy [keV] t1/2 Spin/Parity Q [b] Method Recommended Tables
168Er 264 114 ps 4+ -2.2(10) CER INDC(NDS)-0833
821 2.8 ps 2+ 2.3(2) CER 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
168Er 80. 1.86 ns 2+ +0.62(6) IPAC 1980FU03 10.1103/PhysRevC.21.2575
+0.658(14) [166Er 81] ME 1968MU01 10.1007/BF01380122
264. 121 ps 4+ +1.17(12) TF 1996BR09 10.1016/0375-9474(96)00003-6
+1.26(16) [166Er 265.] IMPAC 1968DE28
-2.2(10) CER 1970MCZQ
2013STZZ
549. 16.8 ps 6+ +1.81(12) TF 1996BR09 10.1016/0375-9474(96)00003-6
+2.0(3) [168Er 264.] TF 1989DO12 10.1103/PhysRevC.40.2035
821. 2.9 ps 2+ +0.77(4) TF 1996BR09 10.1016/0375-9474(96)00003-6
+0.72(14) [168Er 549.] TF 1989DO12 10.1103/PhysRevC.40.2035
2.3(2) CER 1983HU01
2013STZZ		 10.1103/PhysRevC.27.550
928. 3.4 ps 8+ +2.4(2) TF 1996BR09 10.1016/0375-9474(96)00003-6
+2.7(5) [168Er 549.] TF 1989DO12 10.1103/PhysRevC.40.2035
1094. 112.5 ns 4- +0.96(4) TDPAC 1980FU03 10.1103/PhysRevC.21.2575
1396. 1.4 ps 10+ +3.1(4) TF 1996BR09 10.1016/0375-9474(96)00003-6
+3.2(8) [168Er 549.] TF 1989DO12 10.1103/PhysRevC.40.2035

† 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.