Method and apparatus for measuring incident radiation
AssigneeOptical Semiconductors, Inc.
InventorBrian J. Fitzpatrick
Life of this patent
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Abstract
A method and apparatus for measuring radiation are disclosed in which a scintillation body intercepts incident radiation to cause the body to emit a population of scintillation photons, the population of scintillation photons is spectrally decomposed into at least a first subpopulation of photons and a second subpopulation of photons (the first subpopulation originating from faster time decay processes than the second subpopulation) and at least one of the subpopulations is detected.
Claims85
A method of measuring incident radiation by scintillation comprising
- a. intercepting incident radiation with a body of scintillation material to thereby cause said body to emit a population scintillation photons, said material exhibiting time-dependent emission of scintillation photons;
- b. spectrally decomposing the population of scintillation photons into at least a first subpopulation of photons and a second subpopulation of photons, the first subpopulation originating from faster time decay processes than the second subpopulation and
- c. detecting scintillation photons in the first subpopulation
- wherein
- the spectral decomposing spatially disperses at least the first and second subpopulations and
- the detecting comprises detecting scintillation photons in the first subpopulation at a point spatially dispersed from the point of detecting scintillation photons in the second subpopulation.
A device for measuring incident radiation by scintillation comprising
- a. a body of scintillation material for intercepting incident radiation and emitting a population of scintillation photons, said material exhibiting time dependent emission of scintillation photons;
- b. a spectral decomposition means for spectrally decomposing the population of scintillation photons into at least a first subpopulation of photons and a second subpopulation of photons, the first subpopulation originating from faster time decay processes than the second subpopulation;
- c. first detector means for detecting scintillation photons in the first subpopulation and
- d. second detector means for detecting scintillation photons in the second subpopulation.
A method of measuring incident radiation by scintillation comprising
- a. intercepting incident radiation with a body of scintillation material to thereby cause said body to emit a population of scintillation photons, said material exhibiting time-dependent emission of scintillation photons;
- b. spectrally decomposing the population of scintillation photons into at least a first subpopulation of photons and a second subpopulation of photons, the first subpopulation originating from faster time decay processes than the second subpopulation and being of shorter wavelength than the second subpopulation;
- and
- c. detecting scintillation photons in the first subpopulation
- wherein
- the spectral decomposing spatially disperses at least the first and second subpopulations and the detecting comprises detecting scintillation photons in the first subpopulation at a point spatially dispersed from the point of detecting scintillation photons in the second subpopulation.
A device for measuring incident radiation by scintillation comprising
- a. a body of scintillation material for intercepting incident radiation and emitting a population of scintillation photons, said material exhibiting time dependent emission of scintillation photons;
- b. a spectral decomposition means for spectrally decomposing the population of scintillation photons into at least a first, subpopulation of photons and a second subpopulation of photons, the first subpopulation originating from faster time decay processes than the second subpopulation and the first subpopulation being of shorter wavelength than the second subpopulation;
- c. first detector means for detecting scintillation photons in the first subpopulation and
- d. second detector means for detecting scintillation photons in the second subpopulation.
Dependencies are inferred from the claim text.