Abstract

The absolute photoabsorption cross-section for Kr in the energy region of 90 eV through 1300 eV has been precisely measured using a multi-electrode ion chamber and monochromatized synchrotron radiation. In order to improve the spectral purity of monochromatized synchrotron radiation, an electron storage ring was operated at an electron beam energy considerably lower than the normal mode, and a thin foil was inserted into the photon beam. The photoabsorption cross-sections obtained are close to the previously reported data in most photon energies. However there are discrepancies of 5% or more in the cross-section data around 200 eV between the present results and the literature data.

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