Radiation stability of CsBr:Eu needle image plates

Journal Article · Thu Oct 15 00:00:00 EDT 2009 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3243232· OSTI ID:21361885

Batentschuk, M; Neudert, S; Weidner, M; Osvet, A ^[1]; Struye, L; Tahon, J -P; Leblans, P ^[2]

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1. Department of Materials Science, Institute 6, University of Erlangen-Nuremberg, Martensstr. 7, Erlangen 91058 (Germany)
2. Agfa Gevaert, Septestraat 27, Mortsel B-2640 (Belgium)

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{sup 2+}-containing precursor CsEuBr{sub 3} for the doping in the manufacturing process.

• OSTI ID: 21361885
• Journal Information: Journal of Applied Physics, Vol. 106, Issue 8; Other Information: DOI: 10.1063/1.3243232; (c) 2009 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CESIUM BROMIDES
EUROPIUM
EUROPIUM IONS
HARD X RADIATION
HARDNESS
MONOCRYSTALS
OXYGEN
PHOSPHORS
PHOTOLUMINESCENCE
PLATES
POWDERS
SPATIAL RESOLUTION
STABILITY
ALKALI METAL COMPOUNDS
BROMIDES
BROMINE COMPOUNDS
CESIUM COMPOUNDS
CHARGED PARTICLES
CRYSTALS
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION
HALIDES
HALOGEN COMPOUNDS
IONIZING RADIATIONS
IONS
LUMINESCENCE
MECHANICAL PROPERTIES
METALS
NONMETALS
PHOTON EMISSION
RADIATIONS
RARE EARTHS
RESOLUTION
X RADIATION