Pressure effect in the X-ray intrinsic position resolution in noble gases and mixtures

A study of the gas pressure effect in the position resolution of an interacting X- or gamma-ray photon in a gas medium is performed. The intrinsic position resolution for pure noble gases (Argon and Xenon) and their mixtures with CO2 and CH4 were calculated for several gas pressures (1-10bar) and fo...

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Autores principales: Azevedo, C.D.R., Gonzalez-Diaz, D., Correia, P.M., Biagi, S., Silva, A.L.M., Carramate, L.F.N.D., Veloso, J.F.C.A.
Lenguaje:eng
Publicado: 2016
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.1088/1748-0221/11/12/P12008
http://cds.cern.ch/record/2154761
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author Azevedo, C.D.R.
Gonzalez-Diaz, D.
Correia, P.M.
Biagi, S.
Silva, A.L.M.
Carramate, L.F.N.D.
Veloso, J.F.C.A.
author_facet Azevedo, C.D.R.
Gonzalez-Diaz, D.
Correia, P.M.
Biagi, S.
Silva, A.L.M.
Carramate, L.F.N.D.
Veloso, J.F.C.A.
author_sort Azevedo, C.D.R.
collection CERN
description A study of the gas pressure effect in the position resolution of an interacting X- or gamma-ray photon in a gas medium is performed. The intrinsic position resolution for pure noble gases (Argon and Xenon) and their mixtures with CO2 and CH4 were calculated for several gas pressures (1-10bar) and for photon energies between 5.4 and 60.0 keV, being possible to establish a linear match between the intrinsic position resolution and the inverse of the gas pressure in that energy range. In order to evaluate the quality of the method here described, a comparison between the available experimental data and the calculated one in this work, is done and discussed. In the majority of the cases, a strong agreement is observed.
id cern-2154761
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
record_format invenio
spelling cern-21547612022-08-10T12:47:23Zdoi:10.1088/1748-0221/11/12/P12008http://cds.cern.ch/record/2154761engAzevedo, C.D.R.Gonzalez-Diaz, D.Correia, P.M.Biagi, S.Silva, A.L.M.Carramate, L.F.N.D.Veloso, J.F.C.A.Pressure effect in the X-ray intrinsic position resolution in noble gases and mixturesDetectors and Experimental TechniquesA study of the gas pressure effect in the position resolution of an interacting X- or gamma-ray photon in a gas medium is performed. The intrinsic position resolution for pure noble gases (Argon and Xenon) and their mixtures with CO2 and CH4 were calculated for several gas pressures (1-10bar) and for photon energies between 5.4 and 60.0 keV, being possible to establish a linear match between the intrinsic position resolution and the inverse of the gas pressure in that energy range. In order to evaluate the quality of the method here described, a comparison between the available experimental data and the calculated one in this work, is done and discussed. In the majority of the cases, a strong agreement is observed.A study of the effect of gas pressure in the position resolution of an interacting X or γ-ray photon in a gas medium is performed. The intrinsic position resolution for pure noble gases (Argon and Xenon) and their mixtures with CO(2) and CH(4) was calculated for several gas pressures (1–10 bar) and for photon energies between 1 and 60 keV, being possible to establish a linear relation between the intrinsic position resolution and the inverse of the gas pressure in the indicated energy range, as intuitively expected. We show how, at high pressures and low photoelectron energies, this intrinsic 1/P scaling is modified due to the diffusion of the primary ionization in the direction perpendicular to the electric field. In order to evaluate the quality of the method here described, a comparison between the available experimental data and microscopic simulations is presented in this work and discussed. In the majority of cases, a good agreement is observed. The conditions to achieve position resolutions down to 10 μm in a realistic detector are shown and discussed.A study of the gas pressure effect in the position resolution of an interacting X- or gamma-ray photon in a gas medium is performed. The intrinsic position resolution for pure noble gases (Argon and Xenon) and their mixtures with CO2 and CH4 were calculated for several gas pressures (1-10bar) and for photon energies between 5.4 and 60.0 keV, being possible to establish a linear match between the intrinsic position resolution and the inverse of the gas pressure in that energy range. In order to evaluate the quality of the method here described, a comparison between the available experimental data and the calculated one in this work, is done aarXiv:1605.06256oai:cds.cern.ch:21547612016-05-20
spellingShingle Detectors and Experimental Techniques
Azevedo, C.D.R.
Gonzalez-Diaz, D.
Correia, P.M.
Biagi, S.
Silva, A.L.M.
Carramate, L.F.N.D.
Veloso, J.F.C.A.
Pressure effect in the X-ray intrinsic position resolution in noble gases and mixtures
title Pressure effect in the X-ray intrinsic position resolution in noble gases and mixtures
title_full Pressure effect in the X-ray intrinsic position resolution in noble gases and mixtures
title_fullStr Pressure effect in the X-ray intrinsic position resolution in noble gases and mixtures
title_full_unstemmed Pressure effect in the X-ray intrinsic position resolution in noble gases and mixtures
title_short Pressure effect in the X-ray intrinsic position resolution in noble gases and mixtures
title_sort pressure effect in the x-ray intrinsic position resolution in noble gases and mixtures
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.1088/1748-0221/11/12/P12008
http://cds.cern.ch/record/2154761
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AT biagis pressureeffectinthexrayintrinsicpositionresolutioninnoblegasesandmixtures
AT silvaalm pressureeffectinthexrayintrinsicpositionresolutioninnoblegasesandmixtures
AT carramatelfnd pressureeffectinthexrayintrinsicpositionresolutioninnoblegasesandmixtures
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