PLASMON LOSS AND PLASMON GAIN IN MG-CD ALLOYS

The energy and intensity of the plasmon loss lines accompanying X-ray photoemission and Auger emission lines in the spectra of Mg, Mg 88Cd12, Mg75Cd25, Mg 50Cd50, Mg25Cd75, Cd and Mg 97Ag3 have been measured. The probability of plasmon excitation is found to decrease rapidly with increasing Cd or Ag concentration. The energy and intensity of a weak satellite line on the high kinetic energy side of the MgKL2.3L2.3(1D) line has been measured for five of the alloys and these results confirm that the satellite is due to plasmon gain.