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
164Er 92 1.48 ns 2+ 0.694(15) ME INDC(NDS)-0816
299 86 ps 4+ +1.4(2) TF INDC(NDS)-0816
614 - 6+ +1.9(3) TF INDC(NDS)-0816
860 1.9 ps 2+ +0.81(14)) TF INDC(NDS)-0816
1025 2.6 ps 8+ +2.7(4) TF INDC(NDS)-0816
1518 1.0 ps 10+ +3.2(7) TF INDC(NDS)-0816


Recommended† electric quadrupole moments
Isotope Energy [keV] t1/2 Spin/Parity Q [b] Method Recommended Tables
164Er 92 1.48 ns 2+ <0 CER INDC(NDS)-0833
860 1.9 ps 2+ 2.4(3) 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
164Er 92. 1.48 ns 2+ 0.697(15) [166Er 81] ME 1968MU01 10.1007/BF01380122
< 0 CER 1981HU02
2013STZZ		 10.1103/PhysRevC.23.240
299. 86 ps 4+ +1.46(15) [166Er] IPAC 1997AL25 10.1023/A:1012604322747
+1.36(8) TF 1996BR09 10.1016/0375-9474(96)00003-6
614. 6+ +1.88(9) TF 1996BR09 10.1016/0375-9474(96)00003-6
860. 1.9 ps 2+ +0.81(6) TF 1996BR09 10.1016/0375-9474(96)00003-6
2.4(3) CER 1983HU01
2013STZZ		 10.1103/PhysRevC.27.550
1025. 2.6 ps 8+ +2.72(13) TF 1996BR09 10.1016/0375-9474(96)00003-6
1518. 1.0 ps 10+ +3.2(3) TF 1996BR09 10.1016/0375-9474(96)00003-6

† 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.