<p>FLUORESCENCE LASER EXAFS Apparatus (10) for obtaining fluorescence laser EXAFS (Extended X-ray Absorption Fine Structure). A lens (12) directs a pulse of radiant energy (13) onto a metal target (15) to produce X-rays (16). A baffle (17) directs the X-rays (16) onto a spectral-dispersive monochromator (18) which directs the spectrally-resolved X-rays (16R) therefrom onto a sample (11). Fluorescence X-rays (27) from the sample (11) strike a phosphor (26) on a grid (19). Emitted light (21) from the phosphor (26) corresponds spatially to the spectral resolution of the X-rays (16R). Emitted light intensity at a point along the spatial distribution corresponds to the absorption characteristics of the sample (11) at a particular wavelength of the incoming X-rays (16R). An imaging lens (20) directs the emitted light (21) onto photographic film or an array detector (22). A reference spectrum of the spectrally-resolved X rays (16R) is obtained by placing photographic film or an array detector (29) in the path of the spectrally-resolved X-rays (16R) so that only a portion of the X-rays (16R) throughout the spectrum strikes the film or array detector with the remaining portion throughout the spectrum allowed to pass to the sample (11).</p>
申请公布号
CA1192675(A)
申请公布日期
1985.08.27
申请号
CA19830425316
申请日期
1983.04.06
申请人
BATTELLE DEVELOPMENT CORPORATION
发明人
EPSTEIN, HAROLD M.;SCHWERZEL, ROBERT E.;ANDRUS, PAUL G.