A new technique of the excited-state photoionization studies in Ce:LiYF 4 and Ce:LiLuF 4 crystals of the activator ions fluorescence decay is proposed. The 
excited-state photoionization spectra from 5d-state of Ce
 Polarimetric detection of the photon excitation of surface plasmonsA polarimetric method for the detection of surface plasmons, 
excited by linearly polarised light
 Spin-wave excitations of paramagnetic impurities in superconductorsThe existence of spin-wave 
excitations of paramagnetic impurities in a superconductor
 A new technique of the excited-state photoionization studies in Ce:LiYF 4 and Ce:LiLuF 4 crystals of the activator ions fluorescence decay is proposed. The 
excited-state photoionization spectra from 5d-state of Ce