A. Kivimaki et al., SUBNATURAL LINEWIDTHS IN THE KR M5N2,3N2,3 AND XE N5O2,3O2,3 RESONANTAUGER-SPECTRA, Physical review letters, 71(26), 1993, pp. 4307-4310
The line sharpening effect, one of the characteristics of the Auger re
sonant Raman effect when the bandwidth of exciting photons is smaller
than the lifetime widths of the corresponding core levels, has been ob
served with clarity for the first time. The kinetic energies of the re
sonant Auger lines following the 3d --> 5p and 4d --> 6p excitations i
n Kr and Xe, respectively, display also linear dispersion when photon
energy is scanned over the resonances.