TA, AU AND TH L-X-RAY-ENERGY SHIFTS INDUCED BY 0.6, 1.2, 2.4 AND 4 MEV NUCLEON KR IONS/

The L X-ray spectra of Ta, Au and Th induced by 0.6 to 4 MeV/nucleon ( MeV/n) Kr-84 ions have been studied by means of a LiF(100) equipped cr ystal spectrometer with an overall resolution of 30 eV at 8.146 keV. T he mean energy shifts of the main lines have been measured with accura cies ranging from 5 eV for well separated lines, to 30 eV for poorly r esolved lines. Mean energy shifts per M and N spectator electron vacan cies were deduced and compared with predictions of different models. T he mean number of these vacancies at the various beam energies were es timated. Diagram lines were also observed and assigned to the internal conversion of transition energies between nuclear Coulomb excited lev els. In the case of the L alpha lines of Ta and Au and at the lower be am energies (0.6 and 1.2 MeV/n) the full width at half maximum of thes e lines was used to deconvolute the shifted peaks in the individual co rresponding satellite lines.