PARAMAGNETIC SPECTRAL RESPONSE FROM THE MAGNETIC AND NONMAGNETIC CE SITES IN THE COMPOUND CE2SN5

Observation of a broad, high-energy Lorentzian-like spectral response centered on thecharacteristic energy of similar to 36 (+/-3) meV origi nating from the ''non-magnetic'' Ce-I sites in the compound Ce,Sn, is reported. This supplements earlier findings of two sharp low-energy (< 20 meV) crystal field excitations from the ''magnetic'' Ce-II sites, which are reconfirmed. In addition, observations of two distinct, high -energy spin-orbit excitations, viz., a well-defined peak around simil ar to 274 (+/-3) meV associated, as expected, with the ''magnetic'' Ce -II atoms and a broad hump centered on similar to 350(+/-10) meV arisi ng, quite plausibly, from the 'non-magnetic' Ce-I sites suggest that t he characteristic energy TK for the F-2(7/2) spin-orbit state of Ce-I ions is similar to 75 (+/-10) meV, compared with T-K similar to 36 (+/ -3) meV for its (F-2(5/2)) ground state.