Caesium (Z=55)
118Cs 119Cs 120Cs 121Cs 122Cs 123Cs 124Cs 125Cs 126Cs 127Cs 128Cs 129Cs 130Cs 131Cs 132Cs 133Cs 134Cs 135Cs 136Cs 137Cs 138Cs 139Cs 140Cs 141Cs 143Cs 144Cs 145Cs 146Cs
Recommended† magnetic dipole moments
Isotope Energy [keV] t1/2 Spin/Parity μ [nm] Method Recommended Tables
134Cs 0 2.06 y 4+ +2.9893(14) AB/D INDC(NDS)-0794
11 47 ns 5+ +3.35(7) TDPAC INDC(NDS)-0816
139 2.91 h 8- +1.0959(6) AB/D INDC(NDS)-0794


Recommended† electric quadrupole moments
Isotope Energy [keV] t1/2 Spin/Parity Q [b] Method Recommended Tables
134Cs 0 2.06 y 4+ +0.37(2) ABLS INDC(NDS)-0833
139 2.91 h 8- +0.92(8) 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
134Cs 0. 2.06 y 4+ +2.9937(9) [133Cs] AB/D 1957ST11 10.1103/PhysRev.105.590
+2.99(2) [133Cs] ABLS 1981TH06 10.1016/0375-9474(81)90274-8
+0.37(2) [133Cs] R 2013STZZ
+0.389(3) st [133Cs] OD , R 1975AC01 10.1016/0375-9474(75)90160-8
+0.38(4) st [133Cs] ABLS 1981TH06 10.1016/0375-9474(81)90274-8
11. 47 ns 5+ +3.35(7) TDPAC 1970DRZX
139. 2.90 h 8- +1.0978(2) [133Cs] AB/D 1962CO14 10.1103/PhysRev.127.517
+1.111(6) [133Cs] ABLS 1981TH06 10.1016/0375-9474(81)90274-8
+0.92(8) [133Cs] R 2013STZZ
+0.98(8) st [133Cs] ABLS 1981TH06 10.1016/0375-9474(81)90274-8

† 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.