The radiation gas detectors with novel nanoporous converter for medical imaging applications

H. Zarei, S. Saramad

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

For many reason it is tried to improve the quantum efficiency (QE) of position sensitive gas detectors. For energetic X-rays, the imaging systems usually consist of a bulk converter and gas amplification region. But the bulk converters have their own limitation. For X-rays, the converter thickness should be increased to achieve a greater detection efficiency, however in this case, the chance of escaping the photoelectrons is reduced. To overcome this limitation, a new type of converter, called a nanoporous converter such as Anodizing Aluminum Oxide (AAO) membrane with higher surface to volume ratio is proposed. According to simulation results with GATE code, for this nanoporous converter with the 1 mm thickness and inter pore distance of 627 nm, for 20-100 keV X-ray energies with a reasonable gas pressure and different pore diameters, the QE can be one order of magnitude greater than the bulk ones, which is a new approach for proposing high QE position sensitive gas detectors for medical imaging application and also high energy physics.

Original languageEnglish
Article numberC02053
JournalJournal of Instrumentation
Volume13
Issue number2
DOIs
Publication statusPublished - 2018 Feb 27
Externally publishedYes

Keywords

  • Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc)
  • Gaseous detectors
  • X-ray detectors

ASJC Scopus subject areas

  • Mathematical Physics
  • Instrumentation

Fingerprint Dive into the research topics of 'The radiation gas detectors with novel nanoporous converter for medical imaging applications'. Together they form a unique fingerprint.

Cite this