0000000000269761

AUTHOR

J. Zimmermann

showing 2 related works from this author

Photostimulated luminescence properties of neutron image plates

2016

Abstract The luminescence properties of two commercial neutron-sensitive image-plates based on Gd 2 O 3 -doped BaFBr:Eu 2 + storage phosphors are examined. These are white Fuji plates and blue Fuji plates (BAS-ND) with Gd 2 O 3 content by weight of 34% and 50%, respectively. Both plates show two maxima in the photostimulation spectrum near 500 nm and 600 nm, with the ratio of the peak responses ( I 600 nm / I 500 nm ) 1.39 and 0.53 for the white and blue plates respectively. The optimum wavelengths for photostimulation for the two phosphors are therefore different. The response of the blue plate is only 25% that of the white plate, if each is stimulated at its optimum wavelength.

Materials sciencePhotostimulated luminescenceAnalytical chemistryPhosphor02 engineering and technology01 natural sciencesPhotostimulationInorganic ChemistryNeutronenOptics0103 physical sciencesNeutronElectrical and Electronic EngineeringPhysical and Theoretical Chemistry010306 general physicsSpectroscopybusiness.industryOrganic ChemistryDoping021001 nanoscience & nanotechnologyAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsWavelengthStorage phosphorPhotolumineszenzLumineszenz0210 nano-technologybusinessLuminescenceOptical Materials
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Comparative study of the luminescence properties of macro- and nanocrystalline MgO using synchrotron radiation

2013

MgO nano-powder with an average crystallite size of nanoparticles ranging 10-15 nm was synthesized using the extractive-pyrolytic method and was studied by room temperature VUV spectroscopy under synchrotron radiation excitation. Comparative analysis of their luminescent properties with that of mac- rocrystalline powder analogues and an MgO single crystal, grown by the arc-fusion method, has been per- formed under excitation by pulsed VUV synchrotron radiation. Special attention was paid to VUV spectral range, which is not reachable with commonly used lamp and laser sources. A considerable blue shift of about 0.3 eV in the excitation spectra of 2.95 eV emission band, was revealed in nanocry…

010302 applied physicsNuclear and High Energy PhysicsMaterials scienceAnalytical chemistrySynchrotron radiation02 engineering and technology021001 nanoscience & nanotechnologyLaser01 natural sciencesNanocrystalline materiallaw.inventionlaw0103 physical sciencesddc:530Crystallite0210 nano-technologyLuminescenceSpectroscopyInstrumentationSingle crystalExcitationNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
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