Photoelectron Range Limitations to the Spatial Resolution for X-Rays in Gas Proportional Chambers
- 1 January 1984
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science
- Vol. 31 (1) , 111-115
- https://doi.org/10.1109/tns.1984.4333221
Abstract
Measurements have been made, for x-ray energies from a few keV to 18 keV, of the limiting spatial resolution caused by the finite range of the photoelectron, or electrons, created when an x-ray is absorbed in the gas of a proportional chamber. In hydrocarbon gases such as methane and ethane, where the photoelectron receives the bulk of the x-ray energy, the limiting spatial resolution is found to vary as a power law of x-ray energy. In argon and xenon, at an x-ray energy approximately twice that of the AK edge and the XeL edge respectively, the measured limiting resolution is better than expected from an equivalent power law behavior.Keywords
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