Publication
Applied Physics Letters
Paper

Low-energy photoionization cross sections from proton-induced x-ray spectroscopy

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Abstract

It is shown that photoionization cross sections in the soft-x-ray region can be determined accurately with proton-induced x-ray spectroscopy. A film of the absorber is evaporated onto a substrate. The characteristic substrate radiation, generated with a proton beam, is measured with and without the absorber. The ionization cross section can then be calculated after a small and often negligible correction is made for the intensity change of the substrate radiation due to the energy loss of the proton beam passing through the absorber.

Date

02 Sep 2008

Publication

Applied Physics Letters

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