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5100587 |
Solid-state radioluminescent zeolite-containing composition and light sources
A new type of RL light source consisting of a zeolite crystalline material, the intralattice spaces of which a tritiated compound and a luminophore are sorbed, and which material is optionally...
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5098813 |
Processes for preparing stimulable-phosphor radiation image storage panel using specified heat or heat and activator-containing gas treatment
Disclosed is a process for preparing a radiation image storage panel having a phosphor layer containing an activated stimulable phosphor, characterized in that applying a heat treatment that can...
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5078919 |
Composition containing aerogel substrate loaded with tritium
The invention provides a process for loading an aerogel substrate with tritium and the resultant compositions. According to the process, an aerogel substrate is hydrolyzed so that surface OH groups...
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5076963 |
Pastes for forming a luminescent layer and insulator layer of electroluminescent element and electroluminescent element using such pastes
The present invention discloses an electroluminescent element comprising spherical spacer particles in a luminescent layer having a dielectric constant of not less than 10 at 1 KHz and 25° C. and...
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5076964 |
Process for producing cerium activated yttrium gallium aluminate CRT phosphor
A process for producing cerium activated yttrium gallium aluminate phosphor comprises dry blending yttrium oxide, gallium oxide, cerium oxide, and unmilled aluminum hydroxide wherein the aluminum...
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5077145 |
Phosphor for X-ray intensifying screen and X-ray intensifying screen
A phosphor for an X-ray intensifying screen contains a phosphor mixture of a phosphor represented by BaFBr:mEu 2 + (5×10 -4 ≤m≤5×10 -2 ), and a phosphor represented by Y 1 -2/3× M x TaO 4 ...
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5068055 |
Europium activated strontium tetraborate UV phosphors
A europium activated strontium tetraborate UV emitting phosphor is disclosed having a weight composition of from about 34.72% to about 35.80 strontium %, from about 17.66% to about 17.78 boron %,...
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5057692 |
High speed, radiation tolerant, CT scintillator system employing garnet structure scintillators
Selected scintillator materials provided in transparent block form for use in systems such as CT scanning systems employ a garnet host material for an activator ion which provides the desired...
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5055227 |
Fluorescent composition for low velocity electron beam excitation
A fluorescent composition for low velocity electron beam excitation, comprising a phosphor capable of emitting light under excitation by a high velocity electron beam and indium oxide (In 2 O 3 )...
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5055226 |
Manufacturing method for red phosphor
A manufacturing method for a Y 2 O 3 : Eu red phosphor is disclosed in which yttrium oxide and europium oxide are used, and also a composite flux composed of a mixture of Na 2 CO 3 , NaF and B 2...
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5047173 |
Method of reducing the powder weight of europium activated strontium tetraborate phosphor
The powder weight of high powder weight SrB 4 O 7 :Eu phosphor is reduced by milling the phosphor, blending it with EuF 3 and H 3 BO 3 , firing the blend and then milling the blend in water...
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5043308 |
Crystalline rare earth aluminum borates
The preparation, structure, and properties of solid inorganic materials containing at least one rare earth element, aluminum, boron and oxygen are described. Also described is the use of such...
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5041334 |
Pigment-attached phosphor
A pigment-attached phosphor in which pigment particles are attached to the surfaces of phosphor particles by a binder, the binder being 0.01 to 1.0 parts by weight and preferably 0.05 to 0.80 parts...
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5037577 |
Method for producing yttrium-aluminum-garnet fine particles and yttrium-aluminum-garnet base phosphor fine particles
A method of producing fine, single-phase YAG particles and fine, single-phase YAG phosphor particles. The method includes subjecting yttrium and aluminum solubilized in an aqueous alkaline solution...
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5023015 |
Method of phosphor preparation
An improved method for preparing a phosphor is disclosed. The method of the invention includes preparing a solution comprising the non-oxygen elements of the phosphor in molar proportions equal to...
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5015452 |
Process for synthesis of uniform colloidal particles of rare earth oxides
An improved process for the preparation of monodispersed spherical colloidal particles from rare earth salts is disclosed. These colloidal particles are obtained in this process by homogeneous...
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5013480 |
Phosphor for cathode ray tube
A phosphor for a chathode ray tube obtained by firing a tervalent europium-activated yttrium oxide of the formula Y 2 O 3 :Eu containing at least one member selected from the group consisting of...
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5009807 |
Niobium-activated yttrium tantalate x-ray phosphor with improved brightness and method of making same
A niobium-activated yttrium trantalate x-ray phosphor which incorporates small molar amounts of a rubidium or cesium halide, a strontium or barium halide, and, optionally, a gallium or aluminum...
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5004948 |
Luminescent material, especially for application in mercury vapor gas discharge light sources, and mercury vapor gas discharge light source
In a luminescent material which comprises a first component for luminescing red light under influence of incident optical radiation and a second component for luminescing in the spectral range from...
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4988402 |
Processes for enhancing fluorescence of tunable titanium-doped oxide laser crystals
The Figure of Merit of titanium-doped oxide crystals suitable for use as a tunable laser is enhanced by treating the article at a temperature of about 50° C. to 80° C. below the melting point of...
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4987575 |
Tetravalent chromium (Cr.sub.4+) as a laser-active ion for tunabale solid-state lasers
A laser-medium in the form of a dielectric crystal or glass doped with tetravalent chromium. The dielectric crystals are of olivine-like structure such as germanates of formula (A) (RE)GeO 4 where...
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4980320 |
Vanadium garnet materials
Vanadium garnet material and a method for their preparation. The vanadium garnet material has a trivalent vanadium cation and a composition that falls within a specific polygon shaped area in a...
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4963755 |
Method for enhancement of useful luminescence from vacancy defects in refractory oxides for tunable lasers
Refractory oxide crystals suitable for use in tunable lasers and a method for preparing the same are provided. The crystals are characterized by high quantum efficiency, high thermal stability,...
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4962504 |
Mixed lanthanide-magnesium aluminates and lasers using monocrystals of these aluminates
Mixed lanthanide-magnesium aluminates and lasers using monocrystals of these aluminates. These lasers in particular incorporate two flash lamps for longitudinally pumping a monocrystalline rod of a...
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4954211 |
Monocrystalline lanthanum orthogallate laser material
Doped lanthanum orthogallate laser materials produced in the form of large perovskite-type doped single crystals are disclosed. Doped single crystals of lanthanum orthogallate are grown from a pure...
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4948527 |
Method of making europium activated yttrium oxide phosphor
A europium activated yttrium oxide phosphor is prepared as follows. Europium oxide is dissolved in nitric acid. Ammonium hydroxide is added to precipitate europium hydroxide, which is then...
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4946621 |
Luminescent mixed borates based on rare earths
Monophase crystalline mixed borates having the formula: M(II) 1 -x Eu(II) x M(III) p Eu(III) q Tb(III) r B 9 O 16 wherein M(II) is at least one bivalent metal selected among barium,...
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4938890 |
Method of making YTaO.sub.4 :Nb phosphor with improved brightness using lithium chloride-lithium sulfate eutectic flux
A method of making a niobium activated yttrium tantalate x-ray phosphor using a lithium chloride-lithium sulfate eutectic flux is disclosed. The mole ratio of the flux is 46.5 mole percent lithium...
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4937150 |
Ultrafine grain fluorescent body
An ultrafine grain fluorescent body comprises an ultrafine grain luminescent material containing an activator and having a surface carrying thereon a layer which is formed from a different material...
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4935934 |
Mixed lanthanide-magnesium gallates and laser using monocrystals of these gallates
Mixed lanthanide-magnesium gallates and laser using monocrystals of these gallates. This laser has two flash lamps for longitudinally pumping a monocrystalline rod of a magnetoplumbite-type gallate...
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4935161 |
Process for YTaO.sub.4 :Nb phosphor preparation using reduced amount of flux
A process is disclosed for preparing M' YTaO 4 :Nb x-ray phosphor which comprises forming a uniform first mixture of Y 2 O 3 , Ta 2 O 5 , and Nb 2 O 5 in amounts equal to approximately the...
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4933600 |
Low-pressure mercury vapor discharge lamp, particularly ultra-violet radiator, also providing visible light output
To permit visual observation of tanning effects obtained by a UV radiation amp, the UV radiation emitting material has admixed thereto a coating material which provides auxiliary visible radiation...
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4929385 |
Freon free process for preparing a niobium activated yttrium tantalate X-ray phosphor
A process is disclosed for preparing M' YTaO 4 :Nb X-ray phosphor which comprises forming a uniform first mixture of Y 2 O 3 , Ta 2 O 5 , and Nb 2 O 5 in amounts equal to approximately the...
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4929386 |
Process for preparing a niobium activated yttrium tantalate X-ray phosphor
A process is disclosed for preparing a single phase M'YTaO 4 :Nb X-ray phosphor which comprises firing a uniform milled mixture consisting essentially of the components of Y 2 O 3 , Ta 2 O 5 ,...
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4929384 |
Process for improving the luminescence of niobium activated yttrium tantalate X-ray phosphor
A process is disclosed for producing M' phase YTaO 4 :Nb X-ray phosphor which comprises forming a mixture of the components Y 2 O 3 , Ta 2 O 5 , and Nb 2 O 5 , and a flux which can be lithium...
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4925702 |
Process for improving the luminescence and bulk density of niobium activated yttrium tantalate X-ray phosphor
A process is disclosed for producing M' phase YTaO 4 :Nb X-ray phosphor which comprises forming a mixture of components Y 2 O 3 , Ta 2 O 5 , and Nb 2 O 5 , and a flux which can be lithium...
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4926091 |
Luminescent terbium-activated borate, luminescent screen provided with such a borate and low-pressure mercury vapor discharge lamp provided with such a screen
Luminescent terbium-activated alkaline earth metal rare earth metal borate having a monoclinic crystal structure and being defined by the formula M 3 Ln 1 -x Tb x (BO 3 ) 3 in which M is at...
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4924139 |
Projection cathode-ray tube with green emitting phosphor screen
This invention relates to a phosphor prepared by mixing a green emitting phosphor InBO 3 :Tb having an excellent color tone with other green emitting phosphors having a short decay time such as Y...
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4915869 |
Mixed lanthanum-magnesium aluminates
Mixed lathanum-magnesium aluminates, their production process and lasers using these aluminates. These lasers comprise two flash lamps for longitudinally pumping a bar of an aluminate of formula La...
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4883970 |
X-ray intensifying screens containing activated rare earth borates
X-ray phosphor consisting essentially of Gd 1 -X BO 3 :Ce X wherein X is 0.001 to 0.09 and process of preparation wherein reactant sources of gadolinium, boron and cerium, e.g., oxides, and...
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4874984 |
Fluorescent lamp based on a phosphor excited by a molecular discharge
A fluorescent lamp based on a phosphor excited by a molecular discharge is described. The fluorescent lamp comprises a fluorescent lamp coated with a manganese doped magnesium aluminate phosphor on...
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4857741 |
X-ray intensifying screen
This invention concerns an intensifying screen using a phosphor capable of emitting light under X-ray excitation. This intensifying screen is characterized by the fact that the phosphor layer in...
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4853354 |
Mixed lanthanum-magnesium aluminates and lasers using monocrystals of these aluminates
These lasers in particular have two flashlamps (30, 32) for longitudinally pumping a monocrystalline aluminate bar (28) emitting in the visible and near infrared, two mirrors (38, 40) for...
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4840747 |
Method for producing a terbium activated cerium magnesium aluminate phosphor
A method is disclosed for producing a terbium activated cerium magnesium aluminate phosphor which comprises forming a uniform powder blend consisting essentially of in percent by weight from about...
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4839243 |
Radiographic intensifying screen
A radiographic intensifying screen comprising a support and a fluorescent layer formed thereon, said fluorescent layer consisting essentially of at least one terbium-activated rare earth oxysulfide...
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4837481 |
Cerium and terbium activated luminescent material and mercury vapor discharge lamp containing the same
A luminescent screen provided with a luminescent material having the hexagonal crystal structure, which material is an aluminate, a gallate or an aluminate gallate. The crystal structure of the...
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4836953 |
Processes for enhancing fluorescence of TI:A1203 tunable laser crystals
The Figure of Merit of titanium-doped sapphire crystal article suitable for use as a tunable laser is enhanced by treating the article at a temperature of about 1750° C. to 2025° C. in an...
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4827187 |
Luminescent barium-hexa-aluminate, luminescent screen provided with such an aluminate and low-pressure mercury vapor discharge lamp provided with such a screen
Luminescent Eu 2 + activated barium-hexa-aluminate mainly having the crystal structure of β'-alumina and being defined by the formula (x-p)BaO.pEuO.(6-0.67x)Al 2 O 3 in which 0.90≤x≤1.22 and...
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4824598 |
Synthetic laser medium
A laser medium is particularly useful in high average power solid state lasers. The laser medium includes a chormium dopant and preferably neodymium ions as codopant, and is primarily a gadolinium...
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4822696 |
Process for the conversion of X-rays
A process for the conversion of X-rays into blue and/or green light with a phosphor which on exposure to X-rays emits light the spectrum of which contains main intensity lines below 460 nm and/or...
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