L-SUBSHELL IONIZATION STUDIES OF AU FOR ALPHA-PARTICLE AND LITHIUM-ION BOMBARDMENT

L-subshell ionization of Au has been investigated for alpha-particle a nd lithium-ion bombardments with energies 0.54-1.74 MeV u(-1) and 0.65 -1.44 MeV u(-1), respectively. Comparison of experimental x-ray produc tion cross sections with the predictions of the ECPSSR and SCA theorie s shows reasonably good agreement for L(alpha) and L(beta) x-rays, whe reas for L(gamma) and L(gamma 1+5) the ECPSSR theory underestimates th e cross sections by about 60% for both alpha-particle and lithium-ion impact, and the SCA theory agrees reasonably well. The ECPSSR theory u nderestimates the L(1)- and L(2)-subshell ionization cross sections an d gives good agreement for the L(3)-subshell, whereas the SCA theory o verestimates the L(3)-subshell ionization cross sections and gives goo d agreement for L(1) and L(2). The experimental data for the total-ion ization cross sections are within 25% of the predictions of both the t heories.