EXPERIMENTAL LIII-SHELL HOLE WIDTHS IN YB AND TA

The resonant Raman scattering cross section from Yb and Ta was measured at incident photon energies close to the LIII absorption edge using synchrotron radiation. Assuming a constant density of final electron states the cross section has a simple dependence on the inner-shell hole width Gamma , which yielded values of 5.3 eV and 5.7 eV for Yb and Ta LIII-shell hole widths, respectively. The error analysis gives an estimated accuracy of +or- 0.2 eV. The present values together with a previous Ho result are slightly but systematically larger than the theoretical ones for the L III-shell hole widths.