Abstract
We present synchrotron measurements of the X-ray quantum efficiency (electrons/photon) of gold for grazing angles in the range 10°<θ<90° and for proton energies in a 2.2−8.3 keV band which includes the M-shell absorption edges. Our photoyields are in good agreement with previous measurements at isolated X-ray energies and closely conform to the csc θ scaling law for 20°<θ<90°. We confirm the presence of photocurrent EXAFS structure at energies between the gold MIV and MII edges. Preliminary measurements of the dependence of the grazing incidence photoyield on the linear polarisation state of the incident beam support the existence of an “X-ray vectorial effect” in gold at kilovolt energies.
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Schedule a callMore From: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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