Zobrazeno 1 - 10
of 393
pro vyhledávání: '"J.-M. Spaeth"'
Publikováno v:
Journal of Physics and Chemistry of Solids. 77:157-163
The paramagnetic center of tetragonal symmetry formed by the Yb 3+ ion in the KZnF 3 crystal has been studied using methods of EPR, ENDOR and optical spectroscopy. The location of the impurity ion and the structural model of the complex differing fro
Publikováno v:
physica status solidi c. 4:1293-1296
In this paper we identify, with optically-detected magnetic resonance via the magnetic circular dichroism of the absorption, the NO3 and CO3– molecular radicals trapped in the structural channels of gamma-irradiated beryl. We confirm that, along wi
Publikováno v:
Current Applied Physics. 6:399-402
The spatial resolution of a glass-ceramic X-ray storage phosphor imaging plate has been measured using a scanned and focussed laser beam. The glass ceramic comprises orthorhombic phase barium chloride crystals containing europium ions embedded in a f
Publikováno v:
physica status solidi (c). 2:380-383
The photoluminescence (PL) of Mn-doped LiBaF3 shows a weak Mn2+ emission band at 710 nm; the corresponding excitation bands are between 210 and 620 nm. After X-irradiation the PL spectrum shows two new bands peaking at 600 and 670 nm that are tentati
Publikováno v:
physica status solidi (a). 202:243-249
The photostimulated luminescence (PSL) from Eu-doped fluorobromo- and fluorochlorozirconate glass-ceramics is reviewed. The PSL is attributed to the characteristic emission of Eu 2+ present in BaX 2 (X = Br, Cl) crystallites which form in the glass u
Radiation defects in Ce‐doped BaCl 2 and fluorochlorozirconate glass‐ceramic X‐ray storage phosphors
Autor:
Andrew Edgar, J.-M. Spaeth, Grant V. M. Williams, J. Selling, Gábor Corradi, Stefan Schweizer
Publikováno v:
physica status solidi (c). 2:592-595
Photostimulated luminescence (PSL) measurements on Ce-doped BaCl2 single crystals show a resolved (349, 373) nm doublet after X-irradiation that can be attributed to Ce3+. A similar doublet is observed in the ultraviolet-excited photoluminescence (PL
Autor:
J.-M. Spaeth
Publikováno v:
phys. stat. sol. (a). 201:2615-2618
Conference Reports are meant to offer an authoritative view on a recently held scientific meeting rather than a comprehensive list of the conference presentations. Authors are invited to describe what they feel were the most interesting contributions
Publikováno v:
Radiation Measurements. 38:663-666
Optically detected EPR investigations have been performed on the recombination luminescence (RL-EPR) of LiBaF3 crystal, X-irradiated at T=4.2 K . RL-EPR lines of VK- centres were found, as well as further lines of a defect with S= 1 2 and an axial g-
Publikováno v:
Current Applied Physics. 4:193-196
The development of transparent glass ceramics as X-ray storage phosphors and their advantages over their crystalline counterparts are briefly reviewed. Measurements of conversion efficiency, stimulation efficiency, storage times, and optical transpar
Publikováno v:
Journal of Physics: Condensed Matter. 16:1489-1500
Photoluminescence studies on single-crystal samples of the x-ray storage phosphor orthorhombic BaBr2:Ce3+ show the existence of three luminescent Ce sites with distinct emission and excitation spectra. The isolated Ce3+ emits only at low temperatures