skip to main content

SciTech ConnectSciTech Connect

Title: Self-detection of x-ray Fresnel transmissivity using photoelectron-induced gas ionization

Electric response of an x-ray mirror enclosed in a gas flow ionization chamber was studied under the conditions of total external reflection for hard x-rays. It is shown that the electric response of the system as a function of the incidence angle is defined by x-ray Fresnel transmissivity and photon-electron attenuation properties of the mirror material. A simple interpretation of quantum yield of the system is presented. The approach could serve as a basis for non-invasive in situ diagnostics of hard x-ray optics, easy access to complementary x-ray transmissivity data in x-ray reflectivity experiments, and might also pave the way to advanced schemes for angle and energy resolving x-ray detectors.
Authors:
 [1]
  1. Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439 (United States)
Publication Date:
OSTI Identifier:
22489340
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 108; Journal Issue: 4; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ATTENUATION; DETECTION; GAS FLOW; HARD X RADIATION; INCIDENCE ANGLE; IONIZATION CHAMBERS; MIRRORS; PHOTONS; REFLECTIVITY