We have determined characteristic Kondo energies of the ${}_{}{}^2{}_{}{}^{}$${\mathit{F}}_{5/2}$ and ${}_{}{}^2{}_{}{}^{}$${\mathit{F}}_{7/2}$ spin-orbit states of Ce in the compound ${\mathrm{CePd}}_3$ using epithermal neutrons. They are ∼50 and ∼90 meV, respectively. Kramers-Kronig and moment sum-rule integrals together help to ascertain that the low-temperature magnetic response for the ground state ${(}^2$${\mathit{F}}_{5/2}$) is closely (and almost wholly) represented by a single-ion spectral form with the characteristic energy of ∼50 meV. Additional or deviational low-energy magnetic scattering (at energies above ∼2 meV) which could be associated with possible low-temperature coherence or other phenomena is estimated to be at a level below ∼2% of the integrated single-ion spectral intensity. © 1996 The American Physical Society.

• Received 2 October 1995

DOI:https://doi.org/10.1103/PhysRevB.53.8188