Radiation stability of CsBr:Eu needle image plates

Needle image plates (NIPs) based on CsBr:Eu are a good alternative to the BaFBr:Eu powder image plates due to their higher sensitivity and improved spatial resolution. The x-ray radiation stability of the NIPs produced by Agfa Gevaert was investigated and it was found that the radiation stability of...

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Bibliographic Details
Published in:Journal of applied physics 2009-10, Vol.106 (8), p.083504-083504-5
Main Authors: Batentschuk, M., Neudert, S., Weidner, M., Osvet, A., Struye, L., Tahon, J.-P., Leblans, P.
Format: Article
Language:English
Subjects:
ALKALI METAL COMPOUNDS
BROMIDES
BROMINE COMPOUNDS
CESIUM BROMIDES
CESIUM COMPOUNDS
CHARGED PARTICLES
CRYSTALS
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION
EUROPIUM
EUROPIUM IONS
HALIDES
HALOGEN COMPOUNDS
HARD X RADIATION
HARDNESS
IONIZING RADIATIONS
IONS
LUMINESCENCE
MATERIALS SCIENCE
MECHANICAL PROPERTIES
METALS
MONOCRYSTALS
NONMETALS
OXYGEN
PHOSPHORS
PHOTOLUMINESCENCE
PHOTON EMISSION
PLATES
POWDERS
RADIATIONS
RARE EARTHS
RESOLUTION
SPATIAL RESOLUTION
STABILITY
X RADIATION
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Summary:Needle image plates (NIPs) based on CsBr:Eu are a good alternative to the BaFBr:Eu powder image plates due to their higher sensitivity and improved spatial resolution. The x-ray radiation stability of the NIPs produced by Agfa Gevaert was investigated and it was found that the radiation stability of the optimized NIPs is as high as that of the commercial CsI:Tl single crystals and much higher than reported in literature for the CsBr:Eu NIPs. The dependence of the sensitivity of the NIPs on the accumulated dose was determined for three different types of x-ray irradiation. It is shown that degradation of the sensitivity starts at about 10 Gy and it is the strongest for the most hard x-ray beam. If the energy absorbed by a NIP is taken into account, the degradation does not depend on the hardness of the applied x-ray beam. It is suggested that the main reason for the observed high radiation stability of the CsBr:Eu NIPs is the use of the oxygen-free Eu 2 + -containing precursor CsEuBr 3 for the doping in the manufacturing process.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3243232