Abstract: An LED lamp including an LED and one or more phosphors, wherein for each phosphor, a figure of merit (FOM) defined as the product of (incident LED flux)×(excitation cross-section of the phosphor)×(phosphor material decay time) is less than 0.3. Such an arrangement provides a light emitting device with improved lumen output and color stability over a range of drive currents.

Abstract: An LED lamp including an LED and one or more phosphors, wherein for each phosphor, a figure of merit (FOM) defined as the product of (incident LED flux)×(excitation cross-section of the phosphor)×(phosphor material decay time) is less than 0.3. Such an arrangement provides a light emitting device with improved lumen output and color stability over a range of drive currents.

Abstract: An adaptable imaging assembly is provided. The adaptable imaging assembly includes a free-standing phosphor film configured to receive incident radiation and to emit corresponding optical signals. An electronic device is coupled to the free-standing phosphor film. The electronic device is configured to receive the optical signals from the free-standing phosphor film and to generate an imaging signal. A free-standing phosphor film is also provided and includes x-ray phosphor particles dispersed in a silicone binder. A method for inspecting a component is also provided and includes exposing the component and a free-standing phosphor film to radiation, generating corresponding optical signals with the free standing phosphor film, receiving the optical signals with an electronic device coupled to the free-standing phosphor film and generating an imaging signal using the electronic device.

Abstract: A method is provided that includes heating a powder to a temperature that is below the melting point of the scintillator composition but is sufficiently high to form a coherent mass. The powder includes a scintillator composition. The coherent mass is polycrystalline and has a pulse height resolution that is less than 20 percent at 662 kilo electron volts; a light yield of more than 5000 photons per milli electron volt; or both a pulse height resolution that is less than 20 percent at 662 kilo electron volts and a light yield of more than 5000 photons per milli electron. A sintered body is provided also.

Abstract: A method of making a cubic halide scintillator material includes pressing a powder mixture of cubic halide and at least one activator under conditions of pressure, temperature, residence time and particle size effective to provide a polycrystalline sintered cubic halide scintillator having a pulse height resolution of from about 7% to about 20%. The conditions include a temperature ranging from about ambient temperature up to about 90% of the melting point of the cubic halide, a pressure of from about 30,000 psi to about 200,000 psi, a pressing residence time of from about 5 minutes to about 120 minutes and an average cubic halide particle size of from about 60 micrometers to about 275 micrometers.

Abstract: A scintillator composition is described, including a matrix material and an activator. The matrix material includes at least one alkali metal or thallium; at least one alkaline earth metal or lead; and at least one halide compound. The activator is usually cerium, praseodymium, or mixtures thereof. Radiation detectors which include the scintillator composition are also described. Methods for detecting high-energy radiation also form part of this disclosure.

Abstract: A sensing element or detector activated by radiation comprising a first scintillator activated by gamma radiation; and a neutron sensing layer comprising a second scintillator activated by neutron radiation.

Abstract: A scintillator composition includes a matrix material, where the matrix material includes an alkaline earth metal and a lanthanide halide. The scintillator composition further includes an activator ion, where the activator ion is a trivalent ion. In one embodiment, the scintillator composition includes a matrix material represented by A2LnX7, where A includes an alkaline earth metal, Ln includes a lanthanide ion, and X includes a halide ion. In another embodiment, the scintillator composition includes a matrix material represented by ALnX5, where A includes an alkaline earth metal, Ln includes a lanthanide ion, and X includes a halide ion. In these embodiments, the scintillator composition includes an activator ion, where the activator ion includes cerium, or bismuth, or praseodymium, or combinations thereof.

Abstract: A phosphor admixture includes a phosphor powder and a number of radiation capture electron emitters. The emitters are dispersed within the phosphor powder. A phosphor screen includes phosphor particles, radiation capture electron emitters and a binder. The emitters and phosphor particles are dispersed within the binder. An imaging assembly includes a phosphor screen configured to receive incident radiation and to emit corresponding optical signals. An electronic device is coupled to the phosphor screen. The electronic device is configured to receive the optical signals from the phosphor screen and to generate an imaging signal.

Abstract: Scintillator materials based on certain types of halide-lanthanide matrix materials are described. In one embodiment, the matrix material contains a mixture of lanthanide halides, i.e., a solid solution of at least two of the halides, such as lanthanum chloride and lanthanum bromide. In another embodiment, the matrix material is based on lanthanum iodide alone, which must be substantially free of lanthanum oxyiodide. The scintillator materials, which can be in monocrystalline or polycrystalline form, also include an activator for the matrix material, e.g., cerium. To further improve the stopping power and the scintillating efficiency of these halide scintillators, the addition of bismuth is disclosed. Radiation detectors that use the scintillators are also described, as are related methods for detecting high-energy radiation.

Abstract: Scintillator compositions are described. They include a matrix material containing at least one lanthanide halide and at least one alkali metal. The compositions also include an activator for the matrix, which can be based on cerium, praseodymium, or a mixture of cerium and praseodymium. Radiation detectors which include the scintillators are disclosed. A method for detecting high-energy radiation with a radiation detector is also described.

Abstract: A scintillator composition comprising a garnet represented by (M1-x-yNxAy)3(Al5-a-bCaDb)O12, where M comprises yttrium, or terbium, or gadolinium, or holmium, or erbium, or thulium, or ytterbium, or lutetium, or combinations thereof, where N comprises additives including a lanthanide, or an alkali metal, or an alkaline earth metal, or combinations thereof, where A comprises a suitable activator ion including cerium, or europium, or praseodymium, or terbium, or ytterbium, or combinations thereof, where C or D comprises lithium, or magnesium, or gallium, or an element from group IIIa, or IVa, or Va, or IIId transition metal, or IVd transition metal, or combinations thereof, where x ranges from about 0 to about 0.90, y ranges from about 0.0005 to about 0.30, and a sum of a and b ranges from about 0 to 2.0.

Abstract: An adaptable imaging assembly is provided. The adaptable imaging assembly includes a free-standing phosphor film configured to receive incident radiation and to emit corresponding optical signals. An electronic device is coupled to the free-standing phosphor film. The electronic device is configured to receive the optical signals from the free-standing phosphor film and to generate an imaging signal. A free-standing phosphor film is also provided and includes x-ray phosphor particles dispersed in a silicone binder. A method for inspecting a component is also provided and includes exposing the component and a free-standing phosphor film to radiation, generating corresponding optical signals with the free standing phosphor film, receiving the optical signals with an electronic device coupled to the free-standing phosphor film and generating an imaging signal using the electronic device.

Abstract: A scintillator composition is disclosed, containing a solid solution of at least two cerium halides. A radiation detector for detecting high-energy radiation is also described herein. The detector includes the scintillator composition mentioned above, along with a photodetector optically coupled to the scintillator. A method for detecting high-energy radiation with a scintillation detector is also described, wherein the scintillation crystal is based on a mixture of cerium halides.

Abstract: A method of manufacturing a detector array for an imaging system, the method comprising providing a pixelated scintillator having a plurality of lost molded pixels comprising a scintillator material adapted to detect radiation.

Abstract: An energy sensitive detector is provided. The detector comprises an array of detector elements, wherein the detector elements comprises a first scintillator configured to emit photons within a first wavelength range when stimulated by X-rays, a second scintillator configured to emit photons within a second wavelength range when stimulated by X-rays, and a photo-detecting component configured to generate a first signal and a second signal, wherein the first signal and second signals are substantially linear functions of the number of photons emitted within the first and second wavelength ranges.

Abstract: A scintillator composition of a halide perovskite material of at least one ABX3 type halide perovskite, at least one activator for the matrix material and optionally at least one charge compensator to assist the incorporation of the activator in the perovskite lattice and any reaction products thereof. Radiation detectors that use the scintillators are also described, as are related methods for detecting high-energy radiation and method of producing an activated halide-perovskite based scintillator crystal.

Abstract: Scintillator materials based on certain types of halide-lanthanide matrix materials are described. In one embodiment, the matrix material contains a mixture of lanthanide halides, i.e., a solid solution of at least two of the halides, such as lanthanum chloride and lanthanum bromide. In another embodiment, the matrix material is based on lanthanum iodide alone, which must be substantially free of lanthanum oxyiodide. The scintillator materials, which can be in monocrystalline or polycrystalline form, also include an activator for the matrix material, e.g., cerium. Radiation detectors that use the scintillators are also described, as are related methods for detecting high-energy radiation.